Ruger PC Carbine

easy
Shop tier 2
high confidence
Pistol-Caliber Carbine
blowback
takedown
pistol caliber
interchangeable magwell

field strip ~2 min · reassembly ~3 min · detail strip ~25 min

Before you begin Verify this firearm is unloaded. Remove the magazine or empty the cylinder or tube, lock the action open, and check the chamber both by sight and by touch. Keep the muzzle in a safe direction and remove all live ammunition from your work area.

Specifications

Manufacturer: Sturm, Ruger & Co.
Origin: United States
Category: Pistol-Caliber Carbine
Action: Blowback
Calibers: 9x19mm Parabellum, .40 S&W
Capacity: 10 or 17 rounds depending on magazine
Production: 2017–present (in-production)
Also known as: PC9, PC Charger (pistol variant)

Model-specific safety

This carbine separates into two halves at a barrel/receiver joint. The takedown is for transport and cleaning, and the two halves must be fully locked together before firing.
The barrel assembly locks up through an adjustable mechanism. Ruger sets the fit with an adjustment knob on the barrel assembly, and a barrel that goes in with no resistance at all is not adjusted correctly.
The bolt must be locked back before the barrel assembly will release, and the bolt stop must be engaged when installing it.
The action uses a heavy tungsten dead-blow weight inside the bolt. Ruger does not describe disassembling it beyond removing the bolt top assembly, extractor and firing pin.
The magazine well is interchangeable to accept different magazine types. Confirm the correct well is fitted for the magazines you are using.

If it will not go back together

Common ways this firearm resists reassembly, and what is actually wrong. Forcing a part that will not seat is how firearms get damaged.

The barrel assembly will not go into the receiver, or will not rotate to lock.

Why The bolt is not locked back with the bolt stop engaged, or the adjustment knob is screwed in too far.

Fix Lock the bolt back and engage the bolt stop, then try again. If it still will not seat, back the adjustment knob off counterclockwise, install the barrel, and retighten the knob.

Forcing it Forcing the barrel assembly against a closed bolt bears on the bolt face and the barrel block.
The barrel assembly goes in and locks, but feels loose or rattles.

Why The adjustment knob is backed off too far. It sets the lock-up tension and stays wherever it was left.

Fix Remove the barrel assembly, tighten the adjustment knob clockwise a little, and reinstall. Ruger's target is noticeable resistance as the barrel turns in, without it being difficult.

Forcing it Firing with a loose barrel lock-up costs accuracy and puts the joint under loads it was not adjusted for.
The barrel assembly will not come out even with the locking lever pushed forward.

Why The bolt is not locked back, or the assembly is being rotated the wrong way.

Fix Lock the bolt back, hold the locking lever forward, and rotate the barrel counterclockwise — the opposite of the direction that installed it.

Forcing it Levering on the barrel or forend to free it can bend the forend and mar the joint.
After reassembly the first shots group poorly.

Why The barrel assembly has not been seated.

Fix With the rifle empty and no magazine, slingshot the bolt from fully rearward two or three times, as Ruger directs after every barrel installation.

Under spring tension

Recoil spring assembly
Hammer spring
Magazine spring

Easily lost parts

Magazine well retaining screw · Recoil spring assembly

Tools

Tool	Required	Used for
5/32" hex wrench	Optional	Loosening the forend takedown screw and the two stock takedown screws. Not needed for the barrel takedown itself.
1/8" hex wrench	Optional	Removing the four handguard screws on handguard-equipped models.
T10 Torx wrench	Optional	Removing the two front sight screws on handguard-equipped models.

Shop difficulty

Shop tier 2 Tier 2 — moderate among rifles and carbines, for the full job: strip to the parts that get coated and put it back together working. 96 pieces, which is high for a long gun, with about six plungers or detents. Most of it goes in order. The traps are a flying extractor, a heavy bolt spring, and the takedown adjustment knob, which has to be re-set for lock-up.

Parts: 86 numbered parts (Complete carbine (86 line items)), from Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc., p. 51–52 ruger-docs.s3.amazonaws.com [1].

Bench time: about 45 min to strip, 65 min to rebuild (estimate). Takedown, bolt (extractor), trigger guard assembly, chassis/forend and handguard screws. Many parts but mostly in order.

Small parts: 12 pins, 9 springs, 10 detents or plungers (counted from the manufacturer's parts list (one per key number unless a quantity is given))

What comes off for coating

Barrel / forend: barrel assembly (takedown), adjustment knob, handguard / forend and screws, sights
Receiver: bolt and recoil spring, charging handle, trigger guard assembly (cross pins), magazine release and latch
Trigger guard assembly: hammer, strut, spring, trigger, plunger, spring, disconnector and spring, safety and detent plunger, bolt stop / last round parts
Bolt: extractor pin, extractor, spring, firing pin and spring, bolt head retaining pins

Special tools

5/32 in and 1/8 in hex wrenches — Forend, stock and handguard screws
pin punches — Trigger guard cross pins and extractor pin

Known pain points

The extractor and its spring fly out of the bolt when the extractor pin is drifted unless they are held. (disassembly)
Source: Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc. ruger-docs.s3.amazonaws.com [1] — “CAUTION: The extractor is under spring tension and may “fly” out of the bolt if it is not held in place during removal of the extractor pin.”
The bolt runs on a heavy recoil spring and slams shut on fingers. (both)
Source: Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc. ruger-docs.s3.amazonaws.com [1] — “CAUTION: The bolt is under heavy spring tension and can injure fingers if it were to slam shut!”

See also 4 documented reassembly problems and their fixes.

Fit or check on rebuild

Barrel lock-up tension (adjustment knob) — The knob must be re-set for firm lock-up.
Seat the barrel by slingshotting the bolt — Ruger directs it after every barrel installation.
Function check (safety, trigger reset, feeding, extraction) — Standard after any detail strip. No single source.

This is Pew-Takedown's rating, not the manufacturer's. How tiers are rated. Forum reports are owners' experience, not specifications.

Manufacturer videos

Official videos from Sturm, Ruger & Co.'s own channels, linked rather than copied. Where a video and the steps on this page differ, follow the manufacturer's manual and video.

Ruger® PC Carbine™ Disassembly Tech Tip RugerFirearms field strip · 2021-11-19
Covers: Ruger PC Carbine
Ruger® PC Carbine™ Reassembly Tech Tip RugerFirearms reassembly · 2021-11-19
Covers: Ruger PC Carbine
Ruger® PC Carbine™ Cleaning Tech Tip RugerFirearms cleaning · 2021-11-19
Covers: Ruger PC Carbine
Ruger® PC Carbine™ Bolt Lock Assembly Tech Tip RugerFirearms detail reassembly · 2024-10-03
Covers: Ruger PC Carbine
Ruger® PC Charger™ Disassembly Tech Tip RugerFirearms field strip · 2021-11-23
Covers: Ruger PC Charger (pistol variant)
Ruger® PC Charger™ Reassembly Tech Tip RugerFirearms reassembly · 2021-11-23
Covers: Ruger PC Charger (pistol variant)

Procedures

Clear and Make Safe

Clear & Make Safe

Point the muzzle in a safe direction and keep your finger off the trigger.
Press the magazine release and remove the magazine.
Pull the charging handle fully to the rear and lock the bolt open by pressing up on the bolt stop.
Visually confirm there is no cartridge in the chamber, using a light.
WarningRuger's own disassembly warning is explicit: unload the firearm before cleaning, lubrication, disassembly or assembly.
Place the safety in the "ON" position if the hammer is cocked, and remove all live ammunition from the work area.

Field Strip — Barrel Assembly Removal

Field Strip

Manufacturer’s videos: Ruger® PC Carbine™ Disassembly Tech Tip RugerFirearms · Ruger® PC Charger™ Disassembly Tech Tip RugerFirearms

Complete the Clear and Make Safe procedure. Leave the bolt locked back — the barrel assembly will not release with the bolt closed.
Push the locking lever forward to unlock the barrel assembly.
WarningForward, not rearward. The lever unlocks the joint; it does not need to be pushed back or pulled.
While holding the locking lever forward, rotate the barrel assembly counterclockwise and pull it out of the receiver.
TipCounterclockwise to remove, clockwise to install. Ruger illustrates both directions.
Removed at this step: Barrel assembly
Retract the charging handle fully rearward and slowly release it until the bolt comes to rest in its forward position.
WarningDo not leave the bolt locked back on the separated receiver.
Clean the bore from the breech end of the separated barrel, and clean the bolt face, chamber and receiver interior.
TipThis is the extent of disassembly Ruger describes for routine inspection, cleaning and lubrication.

Barrel / Forend Separation

Field Strip tools required

Manufacturer’s videos: Ruger® PC Carbine™ Disassembly Tech Tip RugerFirearms · Ruger® PC Charger™ Disassembly Tech Tip RugerFirearms

Complete the barrel assembly removal first.
Use a 5/32" hex wrench to loosen — do not remove — the takedown screw in the forend.
Slide the barrel out of the forend.
Removed at this step: Forend
To reassemble, insert the barrel into the forend and tighten the takedown screw with the 5/32" hex wrench.

Reassembly and Lock-Up Adjustment

Reassembly

Manufacturer’s videos: Ruger® PC Carbine™ Reassembly Tech Tip RugerFirearms · Ruger® PC Charger™ Reassembly Tech Tip RugerFirearms

If this is the first time the barrel assembly is being installed, or the fit needs correcting, loosen the adjustment knob by turning it counterclockwise as far as finger pressure allows.
TipRuger's instruction: after the first adjustment, later installations need only the insert-and-rotate step.
Lock the bolt back with the bolt stop engaged.
Insert the barrel assembly into the receiver and rotate it clockwise until it locks into place.
WarningClockwise to install. The locking lever does not need to be held for installation.
Tighten the adjustment knob by rotating it clockwise until the barrel assembly is securely connected.
WarningYou should feel some resistance turning the barrel assembly into the receiver, but it should not be difficult. If it is, remove the assembly and back the knob off.
Dry cycle the action to seat the barrel assembly: with no magazine and an empty chamber, pull the bolt handle fully to the rear while holding the bolt lock up, then release it and let it slingshot forward. Repeat two or three times.
TipRuger states this seating cycle gives the best fired-shot accuracy after a barrel installation.
Perform the function check before any live firing.

Patent drawings

not under copyright

Drawings from US patents on this design. A patent shows the invention as the inventor filed it; the firearm that shipped can differ in detail, and later production often does. Use them to see how the parts relate, not as a parts reference or a procedure. Per the USPTO, the text and drawings of a patent are typically not subject to copyright; each patent here was checked for a copyright notice.

US Patent 10,782,082 — Bolt assembly for blowback type firearms

Todd Wilkinson, Frank J. Saunders · assigned to Sturm, Ruger & Company, Inc. · filed 2018-10-16 · granted 2020-09-22. Full patent (USPTO)

The PC Carbine's blowback bolt with its dead-blow weight, recoil spring and how the bolt sits in the receiver over the trigger group.

Why this is the Ruger PC Carbine’s patent: listed on the maker’s patent-marking page — Ruger Patents — Sturm, Ruger & Co., Inc. ruger.com [9]: “PC Carbine™ 10,782,082; 10,677,552”

**US Patent 10,782,082, Sheet 4 of 42 — FIG. 4** The patent: “FIG. 4 is a right side longitudinal cross-sectional view thereof” Drawn for the patent, as filed; the production firearm may differ in detail. US Patent 10,782,082 — Bolt assembly for blowback type firearms, Sheet 4 of 42 — United States Patent and Trademark Office. Source. US patent drawing, not subject to copyright.

**US Patent 10,782,082, Sheet 5 of 42 — FIG. 5** The patent: “FIG. 5 is an enlarged view of the breech area of the firearm taken from FIG. 4” Drawn for the patent, as filed; the production firearm may differ in detail. US Patent 10,782,082 — Bolt assembly for blowback type firearms, Sheet 5 of 42 — United States Patent and Trademark Office. Source. US patent drawing, not subject to copyright.

**US Patent 10,782,082, Sheet 9 of 42 — FIG. 9** The patent: “FIG. 9 is an exploded view thereof” Drawn for the patent, as filed; the production firearm may differ in detail. US Patent 10,782,082 — Bolt assembly for blowback type firearms, Sheet 9 of 42 — United States Patent and Trademark Office. Source. US patent drawing, not subject to copyright.

US Patent 10,677,552 — Modular magazine well insert system for firearm

Todd Wilkinson, Frank J. Saunders · assigned to STURN RUGER & COMPANY Inc · filed 2019-01-07 · granted 2020-06-09. Full patent (USPTO)

The PC Carbine's interchangeable magazine-well inserts in the mid-stock and how they mount with the receiver and trigger group.

Why this is the Ruger PC Carbine’s patent: listed on the maker’s patent-marking page — Ruger Patents — Sturm, Ruger & Co., Inc. ruger.com [9]: “PC Carbine™ 10,782,082; 10,677,552”

**US Patent 10,677,552, Sheet 5 of 36 — FIG. 5** The patent: “FIG. 5 is a right side cross-sectional view of the action portion of the firearm showing the firing mechanism component and one embodiment of a magazine well insert positioned in the stock of the firearm” Drawn for the patent, as filed; the production firearm may differ in detail. US Patent 10,677,552 — Modular magazine well insert system for firearm, Sheet 5 of 36 — United States Patent and Trademark Office. Source. US patent drawing, not subject to copyright.

**US Patent 10,677,552, Sheet 6 of 36 — FIG. 6A** The patent: “FIG. 6A is a left side perspective view of the action portion of the firearm with mid-stock removed to better show the receiver, trigger assembly, magazine well insert, and universal latch stud” Drawn for the patent, as filed; the production firearm may differ in detail. US Patent 10,677,552 — Modular magazine well insert system for firearm, Sheet 6 of 36 — United States Patent and Trademark Office. Source. US patent drawing, not subject to copyright.

Torque specifications

Use a calibrated torque driverValues are the manufacturer's, shown in the unit it gives first; conversions are calculated and rounded. Tighten to the stated value — not "until it feels right" — and follow any sequence noted.

Fastener	Torque	Sequence, notes and the source's words	Where it comes from
Stock takedown screws (2)	65 in-lb 7.3 N·m · 5.4 ft-lb	“Secure the two takedown screws to 65 inch-pounds with a 5/32” hex wrench.”	Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc., p. 18 ruger-docs.s3.amazonaws.com [1]
Magazine release cap head screw	15 in-lb 1.7 N·m · 1.2 ft-lb	“The magazine release button compresses the latch stud spring and is retained by the cap head screw, torqued to 15 inch-pounds.”	Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc., p. 19 ruger-docs.s3.amazonaws.com [1]
Charging handle cap screw	65 in-lb 7.3 N·m · 5.4 ft-lb	With the bolt closed, align the conical base of the charging handle with the countersink on the bolt through the receiver slot before tightening. Ruger says to verify this torque every 1,000 rounds or whenever the charging handle is removed and reinstalled. “Tighten the cap screw to 65 inch-pounds to ensure the handle is secure.”	Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc., p. 20 ruger-docs.s3.amazonaws.com [1]
Handguard screws (4) Models with handguard	45 in-lb 5.1 N·m · 3.7 ft-lb	Slide the handguard on without letting it touch the barrel, sight cutouts at 12 o'clock, then tighten the four screws in an alternating sequence with a 1/8" hex wrench. “Torque each of the handguard screws to 45 in-lbs.”	Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc., p. 40 ruger-docs.s3.amazonaws.com [1]
Front sight screws (2) Models with handguard	20 in-lb 2.3 N·m · 1.7 ft-lb	Slide the front sight on from the muzzle end and use a T10 Torx wrench. “Torque each of the front screws to 20 in-lbs.”	Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc., p. 41 ruger-docs.s3.amazonaws.com [1]

Notes: From Ruger's PC Carbine manual. The barrel assembly itself is not torqued: it rotates into the receiver and its lock-up is set with the adjustment knob, as described in the reassembly procedure.

Reported by other sources — not the manufacturer

Not a manufacturer specificationThese values come from the people and publications named beside each one, not from Sturm, Ruger & Co., and where they differ from the manufacturer's values above, the manufacturer wins. They are recorded with who said them and their exact words so you can judge them — not as a recommendation. Confirm any of them with the manufacturer or a licensed gunsmith before you put a wrench on your firearm; a wrong value can crack a stock, strip a thread or loosen a muzzle device.

Fastener	Torque	Who says so, and their words	Where it comes from
Receiver screws (2), 5/32" hex Magpul PC Backpacker Stock (MAG1076) on a Ruger PC Carbine (9mm / .40 S&W)	65 in-lb 7.3 N·m · 5.4 ft-lb	Reported by Magpul Industries Secondary — a parts or tool maker, or a gunsmithing publisher “use a 5/32” hex key to install the two receiver screws, and tighten to 65 in-lbs. according to manufacturer’s instructions.”	Magpul MAG1076 PC Backpacker Stock (Ruger PC Carbine) — Installation Instructions — Magpul Industries, PDF p. 1 of 3 magpul.com [3]
Forend screw (forend to barrel assembly), 5/32" hex Magpul PC Backpacker Stock (MAG1076) on a Ruger PC Carbine (9mm / .40 S&W)	65 in-lb 7.3 N·m · 5.4 ft-lb	Reported by Magpul Industries Secondary — a parts or tool maker, or a gunsmithing publisher “Using a 5/32” hex key, tighten the forend screw to 65 in-lbs.”	Magpul MAG1076 PC Backpacker Stock (Ruger PC Carbine) — Installation Instructions — Magpul Industries, PDF p. 1 of 3 magpul.com [3]
Receiver-to-chassis 12-24 x 3/4 hex screws (2; replace factory stock screws) Midwest Industries Ruger PC Carbine Take-Down Chassis (MI-RPCC / MI-RPCCSF)	55 in-lb 6.2 N·m · 4.6 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher Threadlocker: Loctite (instructions: 'Degrease screws prior to installing loctite') “Drop the two provided 12-24x3/4 hex screw in the screw holes and tighten to 55 inch/pounds, securing receiver to chassis.”	Midwest Industries Ruger PC Carbine Take-Down Chassis (MI-RPCC / MI-RPCCSF) — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [4]
AR grip adaptor 1/4-20 x 1.5" screw Midwest Industries Ruger PC Carbine Take-Down Chassis (MI-RPCC / MI-RPCCSF)	35 in-lb 4 N·m · 2.9 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher Threadlocker: Blue Loctite may be used “install the ¼-20x1.5” screw from the top and torque screw to 35 inch/pounds.”	Midwest Industries Ruger PC Carbine Take-Down Chassis (MI-RPCC / MI-RPCCSF) — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [4]
AR grip screw Midwest Industries Ruger PC Carbine Take-Down Chassis (MI-RPCC / MI-RPCCSF)	45 in-lb 5.1 N·m · 3.7 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher “Install AR style grip with provided grip screw/washer and torque grip screw to 45 inch/pounds.”	Midwest Industries Ruger PC Carbine Take-Down Chassis (MI-RPCC / MI-RPCCSF) — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [4]
Hand guard bottom retaining screw (replaces factory forearm screw) Midwest Industries Ruger PC Carbine Extended M-Lok Hand Guard (MI-CRPC9-X)	55 in-lb 6.2 N·m · 4.6 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher “Then tighten the bottom hand guard retaining screw to 55-inch/pounds.”	Midwest Industries Ruger PC Carbine Extended M-Lok Hand Guard (MI-CRPC9-X) — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [5]
M-Lok rail section screws Midwest Industries Ruger PC Carbine Extended M-Lok Hand Guard (MI-CRPC9-X)	15 in-lb 1.7 N·m · 1.2 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher “Install M-Lok rails to the outside of the handguard, torque M-Lok screws to 15 in/lbs.”	Midwest Industries Ruger PC Carbine Extended M-Lok Hand Guard (MI-CRPC9-X) — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [5]
M-Lok mount cross bolt (on factory lower forearm rail) Midwest Industries MI-PC9M M-Lok Mount on Ruger PC Carbine models 19100, 19101, 19102	50 in-lb 5.6 N·m · 4.2 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher “Push the cross bolt through the hole and torque the bolt to 50 inch/pounds.”	Midwest Industries MI-PC9M Ruger PC-9 M-Lok Mount (models 19100, 19101, 19102) — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [6]
Bolt (charging) handle screw (factory screw re-used) Midwest Industries Ruger PC9 Bolt Handle on a Ruger PC Carbine	65 in-lb 7.3 N·m · 5.4 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher Re-check the torque after 1k rounds (instructions step 9). “Check to make sure the bolt handle is seated and aligned correctly, torque the screw to 65 inch/pounds.”	Midwest Industries Ruger PC9 Bolt Handle — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [7]
Take down block bolts (factory bolts re-used) Midwest Industries Ruger PC Charger Handguard (MI-RC-4.875) on the Ruger PC Charger (pistol variant)	45 in-lb 5.1 N·m · 3.7 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher Threadlocker: Blue thread locker “apply blue thread loc to the take down block bolts and install the MI take down block -- torque the bolts to 45-inch pounds.”	Midwest Industries Ruger PC9 Charger Handguard (MI-RC-4.875) — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [8]
Handguard bolt Midwest Industries Ruger PC Charger Handguard (MI-RC-4.875) on the Ruger PC Charger (pistol variant)	30 in-lb 3.4 N·m · 2.5 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher Threadlocker: Blue Loctite “Apply blue Loctite to the handguard bolt. Install the bolt and torque to 30-inch pounds.”	Midwest Industries Ruger PC9 Charger Handguard (MI-RC-4.875) — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [8]
M-Lok rail section bolts Midwest Industries Ruger PC Charger Handguard (MI-RC-4.875) on the Ruger PC Charger (pistol variant)	15 in-lb 1.7 N·m · 1.2 ft-lb	Reported by Midwest Industries, Inc. Secondary — a parts or tool maker, or a gunsmithing publisher “The M-Lok rail section may be installed in your choice of locations torque the bolts to 15-inch pounds.”	Midwest Industries Ruger PC9 Charger Handguard (MI-RC-4.875) — Installation Instructions — Midwest Industries, Inc., PDF p. 1 (single page) midwestindustriesinc.com [8]

Materials and factory finish

As stated by Sturm, Ruger & Co.. Prep, masking and cure depend on these; a polymer or aluminium part, a nitrided or anodised finish, and a blued steel part are each a different job. Variants with other finishes may exist — check the maker's page for the exact SKU on the bench.

Component	Material	Factory finish	Where it comes from
Receiver Model 19100	Aluminum Alloy	Type III Hard-Coat Anodized	Ruger PC Carbine Autoloading Rifle — Specifications (model 19100) — Sturm, Ruger & Co. ruger.com [2] “Receiver Material Aluminum Alloy … Receiver Finish Type III Hard-Coat Anodized”
Receiver Model 19100	aerospace-grade aluminum billet	Type III hard-coat anodized	Ruger PC Carbine Autoloading Rifle — Specifications (model 19100) — Sturm, Ruger & Co. ruger.com [2] “CNC-machined from an aerospace-grade aluminum billet, the receiver includes an integrated Picatinny-style rail and is Type III hard-coat anodized for maximum durability.”
Barrel Model 19100	chrome-moly steel	—	Ruger PC Carbine Autoloading Rifle — Specifications (model 19100) — Sturm, Ruger & Co. ruger.com [2] “Cold hammer-forged, chrome-moly steel barrel with ultra-precise rifling provides exceptional accuracy and longevity.”
Bolt Model 19100	chrome-moly steel	—	Ruger PC Carbine Autoloading Rifle — Specifications (model 19100) — Sturm, Ruger & Co. ruger.com [2] “Bolt is machined from heat treated, chrome-moly steel to ensure strength, structural integrity and durability.”
Stock Model 19100	glass-filled nylon	—	Ruger PC Carbine Autoloading Rifle — Specifications (model 19100) — Sturm, Ruger & Co. ruger.com [2] “Stock Black Synthetic … Durable, glass-filled nylon synthetic buttstock features a proprietary texture for enhanced control and an integral sling mount for rapid sling attachment .”

Parts list

Transcribed from the manufacturer's parts list (Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc., p. 51–52 ruger-docs.s3.amazonaws.com [1]) — Ruger PC Carbine. Exploded views on pp. 53–57. Key numbers refer to the exploded view in that document.

86 parts

Key	Part	Qty
1	Stock Assembly – Complete	1
2	Low Profile Cap Screw	1
3	Magazine Release Button	1
4	Magazine Release Spring	1
5	Magazine Release Stud	1
6	Stock Assembly	1
7	Butt Pad Holder	1
8	Butt Plate Screw	2
9	Pad Spacer	1
10	Recoil Pad Assembly	1
11	Recoil Pad Screws	1
12	Barrel Assembly with Forend – Complete	1
13	Thread Protector	1
14	O-Ring	1
15	Front Sight	1
16	Sight Screws	4
17	Forend Assembly	1
18	Locking Lever	1
19	Mounting Screws	2
20	Takedown Block	1
21	Detent Spring	1
22	Detent Plunger	1
23	Locking Plunger Spring	1
24	Locking Plunger Detent	1
25	Locking Plunger	1
26	Barrel Spacer	1
27	Adjustment Ring	1
28	Barrel	1
29	Rear Sight Base	1
30	Rear Sight Slide	1
31	Rear Sight Aperture	1
32	Set Screws	2
33	Magazine Well Assemblies (SR9/G9/American) – Complete	1
34	Ejector	1
35	Magazine Well, SR9	1
36	Last Round Plunger	1
37	Latch Pin	1
38	Magazine Latch, SR9	1
39	Magazine Latch Spring	1
40	Magazine Well, G9	1
41	Magazine Well, American 9mm	1
42	Magazine Latch, American 9mm	1
43	Last Round Catch	1
44	Last Round Spring	1
45	Last Round Pivot Pin	1
46	Barrel Block	1
47	Trigger Assembly – Complete Parts so marked must be factory fit.	1
48	Hammer Strut Washer Parts so marked must be factory fit.	1
49	Hammer Strut Spring Parts so marked must be factory fit.	1
50	Hammer Strut Parts so marked must be factory fit.	1
51	Hammer Parts so marked must be factory fit.	1
52	Hammer Pivot Pin Parts so marked must be factory fit.	1
53	Trigger Guard Parts so marked must be factory fit.	1
54	Bolt Stop	1
55	Bolt Stop Spring	1
56	Trigger Pivot Pin Parts so marked must be factory fit.	1
57	Trigger Plunger Spring Parts so marked must be factory fit.	1
58	Trigger Plunger Parts so marked must be factory fit.	1
59	Safety Detent Plunger Spring Parts so marked must be factory fit.	1
60	Safety Detent Plunger Parts so marked must be factory fit.	1
61	Safety Button Parts so marked must be factory fit.	1
62	Trigger Parts so marked must be factory fit.	1
63	Sear Parts so marked must be factory fit.	1
64	Disconnector Pin Parts so marked must be factory fit.	1
65	Disconnector Parts so marked must be factory fit.	1
66	Disconnector Spring Parts so marked must be factory fit.	1
67	Socket Head Cap Screw	1
68	Charging Handle	1
69	Bolt Assembly – Complete	1
70	Bolt	1
71	Extractor	1
72	Extrctor Spring	1
73	Extractor Pin	1
74	Bolt Head Parts so marked must be factory fit.	1
75	Bolt Head Retaining Pins	2
76	Firing Pin	1
77	Firing Pin Spring	1
78	Buffer	1
79	Recoil Spring	1
80	Recoil Spring Retainer	1
81	Bolt Top	1
82	Guide Rod	1
83	Dead Blow Weight	1
84	Trigger Guard Cross Pins	2
85	Receiver The receiver is a serial-numbered part and is not offered for sale.	1
86	Button Head Screws	3

Function check

After every reassemblyPerform these checks on a verified-unloaded firearm. If any check fails, the firearm is not safe to fire — stop and see a licensed gunsmith.

First be sure there is no ammunition in the chamber or magazine, and perform every check with no magazine inserted.
Bolt: pull the bolt fully to the rear and release it. It should travel freely without binding. Repeat twice more.
Safety: pull the bolt fully to the rear and release it to cock the hammer. A distinct click should be heard when the safety is moved to either position.
With the safety "on", attempt to pull the trigger. The trigger should not move and the hammer should not fall.
Move the safety "off", point in a safe direction and pull the trigger. An audible click indicates the hammer has fallen. Repeat the sequence twice more.
Bolt lock: retract the charging handle fully, press up on the bolt stop, then release the handle. It should move forward a fraction of an inch and be held open.
Retract the charging handle fully again and release. The bolt stop should drop and the bolt should run forward.
Confirm the barrel assembly is locked: it must not rotate or pull free by hand.

Maintenance

Lubrication points

Bolt body where it rides in the receiver
Recoil spring guide
Takedown joint threads (a light film)
Hammer and sear pivots

Cleaning notes

Pistol-caliber blowback actions foul heavily and quickly — much more so than a locked-breech rifle. Clean the bolt face and receiver interior regularly. Keep the takedown joint clean; grit there makes the joint hard to lock.

Suggested inspection interval: roughly every 1000 rounds. This is a general guideline, not a manufacturer specification.

Wear parts to inspect

Recoil spring assembly · Extractor · Bolt face · Magazine springs and feed lips

Common issues

Symptom	Likely cause	What to do
Takedown will not release	Bolt not locked to the rear	Lock the bolt back before operating the takedown.
Takedown joint feels gritty or hard to lock	Fouling in the joint threads	Clean the joint and apply a light film of lubricant.
Point of impact shifts between takedown cycles	Optic mounted on the barrel assembly versus the receiver, or an incompletely seated joint	Confirm the joint is fully locked. Mount optics on the receiver rail for consistency across takedowns.

Also covers

The procedures above are reported to apply to: Ruger PC Charger (pistol variant) · Ruger PC Carbine in .40 S&W. Verify against the manual for your specific model.

Similar manual of arms

Ruger 10/22

Legal notes

Not legal adviceThe PC Charger is a pistol-configuration firearm. Adding a stock to it, or otherwise changing its configuration, can create a regulated configuration in many jurisdictions. Verify before making changes.

Sourcing

Confidence: high — Cross-checked against a primary source such as the manufacturer's manual or an issuing military technical manual.
Verification: Checked against the manufacturer manual
Last updated: 2026-10-29

References

Every source this page draws on, with its web address so you can read it yourself. Numbers in brackets elsewhere on the page point here.

[1] Ruger PC Carbine Instruction Manual — Sturm, Ruger & Co., Inc. manufacturer manual primary source
https://ruger-docs.s3.amazonaws.com/_manuals/PC-Carbine.pdf (checked 2026-09-15)
[2] Ruger PC Carbine Autoloading Rifle — Specifications (model 19100) — Sturm, Ruger & Co. website primary source
https://ruger.com/products/pcCarbine/specSheets/19100.html (checked 2026-10-03)
[3] Magpul MAG1076 PC Backpacker Stock (Ruger PC Carbine) — Installation Instructions — Magpul Industries manufacturer manual secondary source
https://magpul.com/media/wysiwyg/Instructions/MAG1076_PC_Backpacker_Stock_INSRT.pdf (checked 2026-10-11)
[4] Midwest Industries Ruger PC Carbine Take-Down Chassis (MI-RPCC / MI-RPCCSF) — Installation Instructions — Midwest Industries, Inc. manufacturer manual secondary source
https://midwestindustriesinc.com/content/installation-instructions/Ruger-PC-Carbine-Chassis-Instructions.pdf (checked 2026-10-11)
[5] Midwest Industries Ruger PC Carbine Extended M-Lok Hand Guard (MI-CRPC9-X) — Installation Instructions — Midwest Industries, Inc. manufacturer manual secondary source
https://midwestindustriesinc.com/content/installation-instructions/Ruger-Extended-M-Lok-Handguard-MI-CRPC9-X-Instructions.pdf (checked 2026-10-11)
[6] Midwest Industries MI-PC9M Ruger PC-9 M-Lok Mount (models 19100, 19101, 19102) — Installation Instructions — Midwest Industries, Inc. manufacturer manual secondary source
https://midwestindustriesinc.com/content/installation-instructions/Ruger-M-Lok-Mount-MI-PC9M-Instructions.pdf (checked 2026-10-11)
[7] Midwest Industries Ruger PC9 Bolt Handle — Installation Instructions — Midwest Industries, Inc. manufacturer manual secondary source
https://midwestindustriesinc.com/content/installation-instructions/Ruger-PC9-Bolt-Handle-Instructions.pdf (checked 2026-10-11)
[8] Midwest Industries Ruger PC9 Charger Handguard (MI-RC-4.875) — Installation Instructions — Midwest Industries, Inc. manufacturer manual secondary source
https://midwestindustriesinc.com/content/installation-instructions/Ruger-PC9-Charger-MI-RC-4.875-Instructions.pdf (checked 2026-10-11)
[9] Ruger Patents — Sturm, Ruger & Co., Inc. website primary source
https://ruger.com/micros/Patents/index.html (checked 2026-10-13)

Notes: Verified against Ruger's current PC Carbine manual (64 pages), sections "Disassembly" (pp. 31-38), "Reassembly" (pp. 38-41) and "Barrel Assembly" (p. 42). Three corrections were made against the previous text: the locking lever is pushed FORWARD to unlock, not rearward; the barrel assembly rotates counterclockwise to remove and clockwise to install; and the adjustable lock-up knob, which the earlier entry did not mention at all, is what sets barrel fit. Ruger explicitly permits dry firing for practice when the rifle is empty and pointed in a safe direction, so doNotDryFire stays false. The PC Charger pistol variant has its own manual and is not covered by this entry.

Found something wrong? Corrections are the most valuable contribution to this project. Open an issue with the model, the step, and a source.