STG U9 Spare Parts

View all Brands

STG Universal Barrel Shroud - Steel - Long Pattern

MSRP:

Now: $275.00

Choose Options
Compare
Rail and Hardware Kit for STG Universal 7.5" Barrel Shroud

MSRP:

Now: $36.50

Add to Cart
Compare
STG Universal Barrel Shroud - Steel 7.5"

MSRP:

Now: $275.00

Choose Options
Compare
STG Universal Charging Handle - Hook Pattern

MSRP:

Now: $23.50

Add to Cart
Compare
Stemple Trunion Assembly - Slide Lock Pattern

MSRP:

Now: $390.00

Add to Cart
Compare
STG Universal Charging Handle - Round Pattern

MSRP:

Now: $23.50

Add to Cart
Compare
BRP STG T Shirt by Nine Line - Red

MSRP:

Now: $25.00

Choose Options
Compare
Slide Lock Trunion: Trunion Body with Ejector

MSRP:

Now: $250.00

Add to Cart
Compare
Slide Lock Trunion: Locking Piece

MSRP:

Now: $120.00

Add to Cart
Compare
Internally Threaded Pattern (ITP) Trunion Assembly

MSRP:

Now: $395.00

Add to Cart
Compare
Internally Threaded Pattern (ITP) and Slide Lock Trunion: Locking Pin

MSRP:

Now: $15.00

Add to Cart
Compare
Slide Lock Trunion: Spacer - Stainless Steel

MSRP:

Now: $5.00

Add to Cart
Compare
STG34 - U Lower Assembly

MSRP:

Now: $1,050.00

Compare
U Lower Assembly - Nib Plated - Black Distressed

Compare
STG Universal Rear Takedown Pin for Lowers with AR Push Pin

MSRP:

Now: $35.00

Add to Cart
Compare
STG Universal Buffer and Key Plate Shim

MSRP:

Now: $4.00

Add to Cart
Compare
STG Universal Rear Takedown Pin SHIM for Lowers with AR Push Pin

MSRP:

Now: $1.00

Add to Cart
Compare
Rear Takedown Pin Support Block for Lowers with AR Push Pin

MSRP:

Now: $45.00

Add to Cart
Compare
STG Universal 9mm Bolt for standard rate and ITP standard and slow fire setups ( with NiB One™ plating)

MSRP:

Now: $375.00

Add to Cart
Compare
Folding Universal Slow Fire Stock and Buffer Assembly for ITP Setups

MSRP:

Now: $540.00

Add to Cart
Compare
Universal Slow Fire Stock and Buffer Assembly for ITP Setups

MSRP:

Now: $360.00

Add to Cart
Compare
U9 Folding Stock and Buffer Assembly - for ITP Setups

Compare
ALUMINUM Bolt Extension for ITP Setups - Shoulderless Pattern

MSRP:

Now: $60.00

Add to Cart
Compare
STEEL Bolt Extension for ITP Setups - Shoulderless Pattern

MSRP:

Now: $60.00

Add to Cart
Compare
Buffer Body for ITP Setups

MSRP:

Now: $55.00

Add to Cart
Compare
STEEL Bolt Extension for ITP Setups

MSRP:

Now: $60.00

Add to Cart
Compare
Double Picatinny Tripod Adapter

MSRP:

Now: $550.00

Add to Cart
Compare
ALUMINUM Bolt Extension with Law Tactical Adapter for ITP Setups

MSRP:

Now: $85.00

Add to Cart
Compare
ALUMINUM Bolt Extension for ITP Setups

MSRP:

Now: $60.00

Add to Cart
Compare
SALE

Adjustable Bolt System - ALUMINUM Bolt Extension for CAR

MSRP:

Was: $60.00

Now: $47.50

Add to Cart
Compare
SALE

Adjustable Bolt System - Heavy STEEL Bolt Extension for Lower Rates

MSRP:

Was: $50.00

Now: $47.50

Add to Cart
Compare
Extension Adapter for Law Tactical Folding Stock Sets

MSRP:

Now: $25.00

Add to Cart
Compare
Spare Bottom Foam for STG Universal Case

MSRP:

Now: $25.00

Add to Cart
Compare
9mm SMG Chamber and Headspace Gauge

MSRP:

Now: $36.00

Add to Cart
Compare
KP31 Barrel Spacer For Use on Stemple STG Setups

MSRP:

Now: $12.75

Add to Cart
Compare
Ejector U9 - 3 Pin

MSRP:

Now: $14.00

Add to Cart
Compare
STG U Magazine Housing (complete) Steel

MSRP:

Now: $405.00

Add to Cart
Compare
U9 8.3" Barrel

MSRP:

Now: $150.00

Add to Cart
Compare
STG Universal Barrel Shroud with Extra Rail (NiB Battleworn® Plated)

MSRP:

Now: $275.00

Add to Cart
Compare
BRP MG08 Pattern Stemple STG Spade Grip Kit for STG U9SF, U45, & U7.62

MSRP:

Now: $495.00

Choose Options
Compare
KP31 Shroud Shim - .01" thick

MSRP:

Now: $4.85

Add to Cart
Compare
S7 - STG Universal Extractor with Spring and Pin

MSRP:

Now: $35.00

Add to Cart
Compare
U9 8.64" barrel threaded 1/2"-28

MSRP:

Now: $135.00

Add to Cart
Compare
STG Universal Barrel Shroud with Extra Rail (NiB Plated)

MSRP:

Now: $265.00

Add to Cart
Compare
STG U Magazine Housing (complete) Aluminum NiB Plated

MSRP:

Now: $375.00

Add to Cart
Compare
Hydraulic Buffer for Universal Adjustable Bolt System

MSRP:

Now: $105.00

Add to Cart
Compare
1/2" - 28 thread extension 1" long

MSRP:

Now: $21.00

Add to Cart
Compare
578" - 28 thread extension

MSRP:

Now: $25.00

View Details
Compare
STG Vinyl Stickers 2" x 2"

MSRP:

Now: $0.10

Add to Cart
Compare
U9SF & U45 Manual - (hard copy 36 pages: 2010-2020 pattern)

MSRP:

Now: $8.50

Add to Cart
Compare
KP31 Shroud Shim - .002" thick

MSRP:

Now: $4.85

Add to Cart
Compare
Ejector U45, U9SF, U7.62

MSRP:

Now: $14.00

Add to Cart
Compare

STG Universal Barrel Shroud - Steel - Long Pattern

STG Universal barrel shroud for 4 lug trunions. Loosely patterned after the Danish short-barreled Suomi setup. Includes: Shroud Assembly Only. Rails, barrel, and swivel are NOT included. Fits STG 12.75" and 16"...

MSRP:

Now: $275.00
Choose Options Compare
Rail and Hardware Kit for STG Universal 7.5" Barrel Shroud

Atlas BT15 Rail Kit for BRP STG Steel Shroud This is the rail setup that fits the threaded holes in the BRP STG Steel Shroud. This shroud is capable of mounting 4 rails at 90º increments. Kit Includes: 1 x BT15 Rail 1 x...

MSRP:

Now: $36.50
Add to Cart Compare
STG Universal Barrel Shroud - Steel 7.5"

STG Universal barrel shroud for 4 lug trunions. Loosely patterned after the Swedish M37 short-barreled Suomi setup. Fits all STG barrels greater than 8" long Material: Steel Finish: Black Oxide or Parkerized (grey) - Please Specify OAL: 7...

MSRP:

Now: $275.00
Choose Options Compare
STG Universal Charging Handle - Hook Pattern

STG Hook Pattern Charging Handle for: STG Universal STG 76 STG 76W STG 34k STG 43 Stemple Suomi

MSRP:

Now: $23.50
Add to Cart Compare
Stemple Trunion Assembly - Slide Lock Pattern

Standard replacement Trunion Assembly for Stemple STG Standard Bolt Setups without pin mounts: Includes trunion, ejector, locking piece, locking pin, and spacer. Compatible with U9, 76, Stemple Suomi & 34k Stemple 76/45 setups without trunion mount...

MSRP:

Now: $390.00
Add to Cart Compare
STG Universal Charging Handle - Round Pattern

STG Round Pattern Charging Handle for: STG Universal STG 76 STG 76W STG 34k STG 43 Stemple Suomi

MSRP:

Now: $23.50
Add to Cart Compare
BRP STG T Shirt by Nine Line - Red

BRP STG T-Shirt by Nine Line Red Shirt With White Artwork

MSRP:

Now: $25.00
Choose Options Compare
Slide Lock Trunion: Trunion Body with Ejector

Trunion Body with Ejector for Slide Lock Trunion Assembly Compatible with Stemple STG Standard Bolt Setups Slide Lock Trunion systems

MSRP:

Now: $250.00
Add to Cart Compare
Slide Lock Trunion: Locking Piece

Locking Piece for Slide Lock Trunion Assembly Compatible with Stemple STG Standard Bolt Setups Slide Lock Trunion systems

MSRP:

Now: $120.00
Add to Cart Compare
Internally Threaded Pattern (ITP) Trunion Assembly

Threaded Trunion Assembly for Internally Treaded Patter (ITP) setups This is the Trunion for Stemple STG ITP setups: U9, U9SF, U45, Stemple Suomi. Includes: Threaded Trunion Trunion Locking Pin Ejector Standard Pattern

MSRP:

Now: $395.00
Add to Cart Compare
Internally Threaded Pattern (ITP) and Slide Lock Trunion: Locking Pin

Trunion Locking Pin for Slide Lock Trunion Assembly and Internally Treaded Patter (ITP) setups Compatible with Stemple STG Standard Bolt Setups Slide Lock Trunion systems

MSRP:

Now: $15.00
Add to Cart Compare
Slide Lock Trunion: Spacer - Stainless Steel

Spacer (.030) for Slide Lock Trunion Assembly Stainless Steel Compatible with Stemple STG Standard Bolt Setups Slide Lock Trunion systems

MSRP:

Now: $5.00
Add to Cart Compare
STG34 - U Lower Assembly

In 2003, the original inventor, John Stemple collaborated with BRP Corp to make new and replacement parts for the Stemple 76/45 receivers he manufactured prior to the 1986 cutoff. From this came a series of compatible drop-on parts for...

MSRP:

Now: $1,050.00
Compare
U Lower Assembly - Nib Plated - Black Distressed

Standard U Lower Assembly for use with all U9, U9SF and U45. The select-fire trigger pack is installed and timed for use with Standard Universal setups. Also Includes: Rear Takedown Pin Rear Takedown Pin Support Block AR Takedown Push...

View Details
Compare
STG Universal Rear Takedown Pin for Lowers with AR Push Pin

STG Universal Rear Takedown Pin for Lowers with AR Push Pin for post-2020 Universal Fire Control Groups The Rear Takedown Pin secures the Receiver Assembly to the Lower Housing Assembly via an AR Takedown Push Pin. A 6-32 set screw retains...

MSRP:

Now: $35.00
Add to Cart Compare
STG Universal Buffer and Key Plate Shim

Included 1 x .003" thick Shim for: 1) Tightening the fit of the STG Buffer-to-Receiver fit. 2) Spacing the Key Plate rearward so it bottoms on the Buffer when the Castle Nut is tightened rather than the Lower Assembly. If the Key Plate...

MSRP:

Now: $4.00
Add to Cart Compare
STG Universal Rear Takedown Pin SHIM for Lowers with AR Push Pin

.001 thick Shim for tightening the fit of the STG Universal Rear Takedown Pin to Universal Fire Control Groups with AR Push Pins for post-2020

MSRP:

Now: $1.00
Add to Cart Compare
Rear Takedown Pin Support Block for Lowers with AR Push Pin

STG Universal Rear Takedown Pin Support Block for Lowers with AR Push Pin in post-2020 Universal Fire Control Groups The Rear Takedown Pin Support Block and Pin is reversible to accommodate for both types of Stemple 76/45 Receiver rear hole...

MSRP:

Now: $45.00
Add to Cart Compare
STG Universal 9mm Bolt for standard rate and ITP standard and slow fire setups ( with NiB One™ plating)

Original STG Universal 9mm Bolt with Extractor for STG Universal (STG-U) Compatible with U9 standard-rate setups and both ITP standard and slow fire setups. For use with: All U9s U9 & U9SF - ITP setups NiB One™ plating This is...

MSRP:

Now: $375.00
Add to Cart Compare
Folding Universal Slow Fire Stock and Buffer Assembly for ITP Setups

Law Tactical Folding Stock and Buffer Assembly Compatible Stemple 76/45 Internally Threaded Pattern (ITP) Receivers. This setup is also used for the adjustable bolt system. Includes: Buffer Body (ITP spec) with Law Tactical Folding...

MSRP:

Now: $540.00
Add to Cart Compare
Universal Slow Fire Stock and Buffer Assembly for ITP Setups

Standard Replacement Stock and Buffer Assembly for Stemple 76/45 Internally Threaded Pattern (ITP) Receivers. This setup is also used for the adjustable bolt system. Includes: Buffer Body (ITP spec) BRP...

MSRP:

Now: $360.00
Add to Cart Compare
U9 Folding Stock and Buffer Assembly - for ITP Setups

Standard Replacement Stock and Buffer Assembly U9 for Stemple 76/45 Internally Threaded Pattern (ITP) Receivers. This setup is also used for the fast-firing (RF-0) 9mm setup in the adjustable bolt system. Contact us with your serial number to determine...

View Details
Compare
ALUMINUM Bolt Extension for ITP Setups - Shoulderless Pattern

Shoulderless ALUMINUM - CAR Length Bolt Extension for STG Universal Internally Threaded Pattern (ITP) U9SF, U45, & U762 •• With the rear shoulders removed from the extensions, the buffer tube does not need to be removed to change...

MSRP:

Now: $60.00
Add to Cart Compare
STEEL Bolt Extension for ITP Setups - Shoulderless Pattern

Shoulderless STEEL - CAR Length Bolt Extension for STG Universal Internally Threaded Pattern (ITP) U9SF, U45, & U762 •• With the rear shoulders removed from the extensions, the buffer tube does not need to be removed to change...

MSRP:

Now: $60.00
Add to Cart Compare
Buffer Body for ITP Setups

Includes: Stripped Steel Buffer Body for ITP Setups and Sealing Ring * Parkerized Finish The rear threads are setup for standard AR and AR Carbine pattern buffer tubes. The Sealing Ring can be added to the the groove to make a...

MSRP:

Now: $55.00
Add to Cart Compare
STEEL Bolt Extension for ITP Setups

STEEL - CAR Length Bolt Extension for STG Universal Internally Threaded Pattern (ITP) U9SF, U45, & U762 This is the heavier extension for lower rates. This is typically used with the 45 and 7.62 setups. It can also be used with the 9mm setup...

MSRP:

Now: $60.00
Add to Cart Compare
Double Picatinny Tripod Adapter

This machined steel mount adapter is designed to attached two firearms with Picatinny rails to MG3 AA mounts, M240 pintles, M60 gooseneck pintles, and Browning pintles with .557" diameter pins. Set Includes: Steel Front Arm Assembly with...

MSRP:

Now: $550.00
Add to Cart Compare
ALUMINUM Bolt Extension with Law Tactical Adapter for ITP Setups

ALUMINUM - CAR Length Bolt Extension with Law Tactical Adapter for STG Universal Internally Threaded Pattern (ITP) U9SF, U45, & U762. The Law Tactical folding stock adapters add approximately 1.3" to the overall length of the bolt stroke...

MSRP:

Now: $85.00
Add to Cart Compare
ALUMINUM Bolt Extension for ITP Setups

ALUMINUM - CAR Length Bolt Extension for STG Universal Internally Threaded Pattern (ITP) U9SF, U45, & U762 Reference Chart

MSRP:

Now: $60.00
Add to Cart Compare
SALE

Adjustable Bolt System - ALUMINUM Bolt Extension for CAR

ALUMINUM - CAR Length Bolt Extension for STG Universal Heavy Bolt System U9SF, U45, & U762 This lighter bolt extension is typically necessary for proper function with weak 9mm ammo running in the Heavy Bolt System Reference Chart...

MSRP:

Was: $60.00

Now: $47.50
Add to Cart Compare
SALE

Adjustable Bolt System - Heavy STEEL Bolt Extension for Lower Rates

Steel - CAR Length Bolt Extension for STG Universal Heavy Bolt System U9SF, U45, & U762 This is the heavier extension for lower rates. This is typically used with the 45 and 7.62 setup. It can also be used with the 9mm setup but only with...

MSRP:

Was: $50.00

Now: $47.50
Add to Cart Compare
Extension Adapter for Law Tactical Folding Stock Sets

The Law Tactical folding stock adapters add approximately 1.3" to the overall length of the bolt stroke. This part screws into the rear of the Universal bolt extensions for use with Law Tactical folding stock sets.

MSRP:

Now: $25.00
Add to Cart Compare
Spare Bottom Foam for STG Universal Case

STG Universal Case Bottom Foam Adhesive backing can be used if desired by peeling the white cover. Cutouts for: M3 45acp mags x 2 kp31 drums x 2 kp31 mags x 2 universal mag housing - any type spare bolt bolt extension 10" barrel without...

MSRP:

Now: $25.00
Add to Cart Compare
9mm SMG Chamber and Headspace Gauge

9mm SMG Chamber Wear and Headspace Gauge To ensure the safe operation of 9mm Fixed-Firing-Pin (FFP) Blow-Back (BB) Submachine Guns (SMGs), chamber wear and headspace should be verified. Since SMGs don't typically show a lot of bore wear...

MSRP:

Now: $36.00
Add to Cart Compare
KP31 Barrel Spacer For Use on Stemple STG Setups

Given the difference between the Receiver and Trunion of an original KP31 and the Stemple 76/45, a Barrel Spacer that is approximately .4” long is necessary to use original KP31 Barrel Shrouds with the Stemple STG setups. Additional Barrel Shims...

MSRP:

Now: $12.75
Add to Cart Compare
Ejector U9 - 3 Pin

Standard replacement ejector compatible with Stemple STG ITP pattern trunions: Used with the STG U9SF Setup. Includes ejector blade and retaining pins. A faster bolt speed is necessary to ensure proper ejection with 9mm ammo with the standard U45...

MSRP:

Now: $14.00
Add to Cart Compare
STG U Magazine Housing (complete) Steel

Standard replacement magazine housing for 2011 and later pattern Universal setups - (U9 and U9SF STG platforms) This is a complete magazine housing for 1.375" OD Stemple 76/45 Receiver to allow use with Finnish and Swedish pattern 9mm drums and...

MSRP:

Now: $405.00
Add to Cart Compare
U9 8.3" Barrel

9mm 8.3" long barrel 41V50 Steel / Parkerized Finish Polished chamber and feed ramp 1:10 twist Loosely patterned after the Swedish M37 short-barreled Suomi setup and Carl Gustaf M45/Swedish K For use with 7.5" Steel...

MSRP:

Now: $150.00
Add to Cart Compare
STG Universal Barrel Shroud with Extra Rail (NiB Battleworn® Plated)

STG Universal quad rail barrel shroud for 10", 10.35" and 16" barrels: The bottom rail in machined into the shroud. 1 accessory is included. Accessory rails can be attached to the top, left and right of the shroud. Extra...

MSRP:

Now: $275.00
Add to Cart Compare
BRP MG08 Pattern Stemple STG Spade Grip Kit for STG U9SF, U45, & U7.62

Spade grip adapter setup for Stemple machine guns with heavy bolt systems with CAR pattern stocks. Includes: Rear Grip Assembly with Machined Steel Frame and MG08-Type Grips Trigger Puller Assembly Trigger Connecting Rod Grip Options:...

MSRP:

Now: $495.00
Choose Options Compare
KP31 Shroud Shim - .01" thick

Copied from original parts and made from stainless steel. Thickness .01" This part tightens the barrel jacket to receiver fit by 'shimming' the rear of the barrel shroud to receiver/trunion. This is a very useful part for...

MSRP:

Now: $4.85
Add to Cart Compare
S7 - STG Universal Extractor with Spring and Pin

Newly manufactured extractor for all Universal configurations: U9, 34k, Stemple-Suomi, STG 76, U9SF, U45, U762, and post-2020 STG 1928s Includes extra power Wolff spring and mounting pin. Unlike the AR pattern extractors this has a more...

MSRP:

Now: $35.00
Add to Cart Compare
U9 8.64" barrel threaded 1/2"-28

9mm 8.64" long barrel Stainless Steel Threaded .1/2"-28 on end Polished chamber and feed ramp 1:10 twist For use on 2010 pattern shroud (see reference pic) and 7.5" Steel Shrouds

MSRP:

Now: $135.00
Add to Cart Compare
STG Universal Barrel Shroud with Extra Rail (NiB Plated)

STG Universal quad rail barrel shroud for 10", 10.35" and 16" barrels: The bottom rail in machined into the shroud. 1 accessory is included. Accessory rails can be attached to the top, left and right of the shroud. Extra...

MSRP:

Now: $265.00
Add to Cart Compare
STG U Magazine Housing (complete) Aluminum NiB Plated

Standard replacement magazine housing for 2011 and later pattern Universal setups - (U9 and U9SF STG platforms) This is a complete magazine housing for 1.375" OD Stemple 76/45 Receiver to allow use with Finnish and Swedish pattern 9mm drums and...

MSRP:

Now: $375.00
Add to Cart Compare
Hydraulic Buffer for Universal Adjustable Bolt System

Hydraulic Buffer for adjustable bolt system STG setups.

MSRP:

Now: $105.00
Add to Cart Compare
1/2" - 28 thread extension 1" long

Steel Thread Extension for 1/2" - 28 Threaded U9, U7.62 & 34k barrel Features wrench flats for easy removal. (9/16" wrench) OAL: 1.4" Extends threads by 1"

MSRP:

Now: $21.00
Add to Cart Compare
578" - 28 thread extension

Stainless Steel Thread Extension for 578" - 28 Threaded U9 and U45 Barrels. Features wrench flats for easy removal. (3/4 wrench) OAL: 1.2" Extends threads by .7"

MSRP:

Now: $25.00
View Details Compare
STG Vinyl Stickers 2" x 2"

2" x 2" vinyl sticker

MSRP:

Now: $0.10
Add to Cart Compare
U9SF & U45 Manual - (hard copy 36 pages: 2010-2020 pattern)

Stemple 76/45 - Stemple Takedown Gun U45/U9SF manual hard copy - 36 pages

MSRP:

Now: $8.50
Add to Cart Compare
KP31 Shroud Shim - .002" thick

Copied from original parts and made from stainless steel. Thickness .002" This part tightens the barrel jacket to receiver fit by 'shimming' the rear of the barrel shroud to receiver/trunion. This is a very useful part for...

MSRP:

Now: $4.85
Add to Cart Compare
Ejector U45, U9SF, U7.62

Standard replacement ejector for Stemple STG pattern trunions: STG U45, U9SF, U7.62 Includes ejector blade and retaining pins.

MSRP:

Now: $14.00
Add to Cart Compare

Compare Selected

Shop by Category

Shop by Brand

Shop by Brand

STG U9 Spare Parts