U45 Spare and Replacement Parts

STG Universal Charging Handle - Hook Pattern

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

STG Universal Charging Handle - Round Pattern

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

BRP STG T Shirt by Nine Line

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

U Lower Assembly - Nib Plated

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...

45 ACP Bolt for ITP Setups

STG Universal 45 acp Bolt for Internally Threaded Pattern  (ITP) setups Weight: 1.51 lbs    Reference Chart

Folding Universal Slow Fire Stock and Buffer Assembly for ITP Setups

Law Tactical Folding 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) with Law Tactical Folding Stock...

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...

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...

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...

ALUMINUM Bolt Extension for ITP Setups

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

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...

Adjustable Bolt System - STEEL Bolt Extension for CAR

Steel - CAR Length Bolt Extension for STG Universal Heavy Bolt System U9SF, U45, & U762   Reference Chart Below

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.

STG Universal Barrel Shroud - Steel 7.5"

STG Universal barrel shroud for 4 lug trunions Fits all STG barrels greater than 8.5" long Material: Steel Finish: Black Oxide OAL: 7.5" Front sight position to match use with BRP-modified KP31 tangent rear sights on Stemple Suomi and STG76 10-32...

STG1928 10.35" Barrel Assembly with Compensator

Complete STG 1928 barrel assembly for post-2012 parts sets.   Includes: Barrel Lock Nut Compensator Front Sight Assembly   45ACP 41V50 Steel Parkerized Finish Threaded 5/8"-24 on end.  The compensator threads on the end of...

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...

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 Wolfe spring and mounting pin.   Unlike the AR pattern extractors this has a more...

U45 and STG1928 10.35" barrel threaded 5/8"-24

45ACP 10.35" long barrel  41V50 Steel Parkerized Finish Fits U45 and STG1928 setups Threaded 5/8"-24 on end

U Lower Assembly - Black

Standard U Lower Assembly for use with U9, U9SF and U45 Black anodized finish

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...

Hydraulic Buffer for Universal Adjustable Bolt System

Hydraulic Buffer for adjustable bolt system STG setups.

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"

STG Vinyl Stickers 2" x 2"

2" x 2" vinyl sticker

U9SF & U45 Manual - (hard copy 36 pages)

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

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...

Ejector U45, U9SF, U7.62

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

STG Universal Barrel Shroud with Extra Rail (Black Anodized)

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...

U45 Mag Housing

STG Universal 45 acp mag housing for standard M3 Grease Gun Magazines. 1.375 ID for Stemple 76/45 Receiver  

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, trigger bar, and trigger adapter   Installation Instructions   Mounting Adapters For...

Suomi KP31, Swed M37, Stemple U9 Trigger Pack Sear Spring

M31 Trigger Pack Sear Spring for original KP31 and Stemple U series guns with Suomi pattern trigger packs

KP31 Barrel Shim - .001 thick

Copied from original parts and made from stainless steel.   Thickness .001"    These are the most thin we could make.  They are excellent for fine tuning your barrel to trunion to shroud fit.   This part tightens the barrel...

Picatinny Rail for Shroud

Picatinny Rail for MN shroud and Suomi Shrouds that have been drill and tapped by BRP   3x Mount Screws included

U45 10.35" barrel - threaded .578"-28

45ACP 10.35" long barrel  Stainless Steel Threaded .578"-28 on end

Universal Front Takedown Pin

Standard HK Small Pin used as front takedown pin for the U9, U9SF, U45, U7.62, STG76 and Stemple Suomi

578" - 28 thread protector

Stainless Steel Thread Protector & Flash Hider for 578" - 28 Threaded U9 and U45 Barrels.    Features wrench flats for easy removal.

KP31 Shroud Shim - .005" thick

Copied from original parts and made from stainless steel.   Thickness .005"   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...

PIAT Cleaning Brush

Original PIAT bristle brush. Approximately 12" long with 1.5" diameter brush.      Also, very useful for cleaning the inside of MG34 & MG42 barrel jackets, and BREN receivers.

Stemple Trunion Retaining Pins

Standard set of replacement Trunion Retaining Pins.  (2 pins included)

STG Combo Wrench

Barrel tool with fitted socket for STG Barrel Locknuts, 3/4 wrench for removing the flash-hider, and spanner for suppressor disassembly.

STG Multi-Tool

Type a description for this product here...

Adjustable Bolt System Mainspring - Extra Heavy

CAR mainspring to be used with higher pressure .45acp and 7.62x25 ammo to reduce cyclic rate.   This spring should not be used with the 9mm setup.   STG Universal  U7.62, U45, & STG 7.62

Adjustable Bolt System Mainspring

This is the standard manspring used for all adjustable bolt system configurations (9mm, 45ACP, & 7.62 x 25).  It is specially designed for maximum reliability across a wide variety of cartridge characteristics.    Used in: STG...

STG Universal Extractor with Spring and Pin

Standard AR- M16 Extractor with small flat machined to work in all Univerals configurations: U9, 34k, Stemple-Suomi, STG 76, U9SF, U45, U762, and post-2020 STG 1928s   Includes extra power Wolfe spring and mounting pin

Heavy Bolt System - Bolt Extension Conversion for CAR to A2

STG Universal 9mm/7.62x25 Bolt Extension Conversion for using the CAR Bolt Extension with A2 length stock.     Can be used with STG Universal (STG-U) & STG 43 with A2 length stock. 

Adjustable Bolt System - Bolt Guide

STG Universal Bolt Guide for all setups utilizing the Adjustable Bolt System (9mm, 7.62x25 and 45 acp). Ejector Included   Reference Chart Below

Picatinny Rail Top for Stemple Receiver

Picatinny Rail Top for Stemple Receiver with mount screws

KP31 Barrel Shim - .003 thick

Copied from original parts and made from stainless steel.   Thickness .003"   This part tightens the barrel to jacket fit by 'shimming' the rear collar of the barrel.   This is a very useful part for accurizing you gun or just fixing...

Stemple U9 Trigger Pack

M31 Trigger Pack that has been parkerized and inspected for use in Stemple 76/45 setups U9, U9SF, U762, & U45   NOT FOR SEMI AUTO US-MADE GUNS.

45 ACP Bolt for Adjustable Bolt System

STG Universal Adjustable Bolt System 45 acp Bolt   Reference Chart Below