STG U9 Spare Parts

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STG Universal Barrel Shroud with Extra Rail (Black Anodized)

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Now: $250.00

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U9 10.35" barrel threaded 1/2"-28

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Now: $160.00

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Suomi 36 rd stick magazine

MSRP:

Now: $28.50

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

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Now: $5.20

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KP31 Barrel Shim - .001 thick

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Now: $2.75

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1/2" - 28 thread protector

MSRP:

Now: $25.00

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U9 Folding Stock and Buffer Assembly - Pattern 1

MSRP:

Now: $360.00

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Picatinny Rail for Shroud

MSRP:

Now: $32.00

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U9 10.35" barrel threaded .578"-28

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Now: $160.00

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Universal Front Takedown Pin

MSRP:

Now: $15.95

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578" - 28 thread protector

MSRP:

Now: $25.00

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KP31 Shroud Shim - .005" thick

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Now: $4.85

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Mainspring STG U9, 34k, & Suomi - New Production

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Now: $14.00

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Stemple STG 9mm Barrel 12.75"

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Now: $160.00

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Stemple STG 9mm Barrel 16" Threaded 1/2-28

MSRP:

Now: $135.00

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PIAT Cleaning Brush

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Now: $4.50

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STG Universal Barrel Shroud - M31 Compensated Front (LONG PICATINNY RAIL)

MSRP:

Now: $220.00

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STG Universal Barrel Shroud - M31 Slant Front (LONG PICATINNY RAIL)

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Now: $220.00

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Stemple Trunion Retaining Pins

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Now: $12.50

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Stemple STG U-9mm, 76, 76W, 34k Trunion (Old Locknut Type)

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Now: $200.00

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STG-U-34k/76/76W Buffer Rod

MSRP:

Now: $12.00

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STG-U-34k/76/76W Buffer

MSRP:

Now: $11.50

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Suomi/STG Magazine Latch Assembly

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Now: $22.00

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STG Combo Wrench

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Now: $45.00

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STG Multi-Tool

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Now: $17.50

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Barrel Jacket Retaining Pin: for 2008-2010 ptrn 34k, 76, 76W

MSRP:

Now: $4.00

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STG 76, 76W, 34k 2006-2010 pattern barrel Lock Nut

MSRP:

Now: $30.00

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Stemple Trunion U9, 76, Stemple Suomi & 34k - 2 Pin Pattern

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Now: $350.00

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Ejector U9, 76, Stemple Suomi, & 34k

MSRP:

Now: $12.00

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STG U9 Magazine Housing (complete - Black Anodized Finish)

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Now: $350.00

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STG 43 Screw and Pin Kit

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Now: $10.00

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Adjustable Bolt System Mainspring - Extra Heavy

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Now: $12.00

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Adjustable Bolt System Mainspring

MSRP:

Now: $14.00

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STG Universal Extractor with Spring and Pin

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Now: $25.00

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Heavy Bolt System - Bolt Extension Conversion for CAR to A2

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Now: $9.00

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STG Universal Barrel Latch

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Now: $12.00

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STG Universal Barrel Nut

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Now: $35.00

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STG Universal Barrel Bushing for use with original Swed & Finnish Shrouds

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Now: $8.00

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STG Universal 7.62x25 Barrel - 9"

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Now: $150.00

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STG Universal 9mm Barrel - 10.35"

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Now: $160.00

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STG Universal Rear Takedown Screw

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Was: $15.50

Now: $14.00

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Adjustable Bolt System - Bolt Guide

MSRP:

Now: $695.00

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Picatinny Rail Top for Stemple Receiver

MSRP:

Now: $32.00

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STG 43 Ejection Port Shield

MSRP:

Now: $125.00

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KP31 Barrel Shim - .003 thick

MSRP:

Now: $2.75

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1/2 - 28 to 15mm x 1mm thread adapter

MSRP:

Now: $17.50

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Stemple U9 Trigger Pack

MSRP:

Now: $100.00

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9mm & 7.62x25 Bolt for Adjustable Bolt System - Nickel-Boron Coated

MSRP:

Was: $450.00

Now: $340.00

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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...

MSRP:

Now: $250.00
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U9 10.35" barrel threaded 1/2"-28

9mm 1:10 twist Threaded 1/2"-28 10.35" long barrel 41V50 Steel / Parkerized Finish Polished chamber and feed ramp Compatible with all shroud setups except for the long KP31 pattern shrouds Ideal for use with direct thread...

MSRP:

Now: $160.00
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Suomi 36 rd stick magazine

36rd original Finnish Suomi drum. Works with M31/KP31, KP44, M37/39, M45. (not for sale where prohibited) Excellent condition MAGAZINE SHIPPING RESTRICTIONS California Restrictions: 10 rounds, unless you can...

MSRP:

Now: $28.50
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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

MSRP:

Now: $5.20
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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...

MSRP:

Now: $2.75
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1/2" - 28 thread protector

Stainless Steel Thread Protector & Flash Hider for 1/2" - 28 Threaded for U9 and U7.62 10" and 16" barrels Features wrench flats for easy removal.

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Now: $25.00
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U9 Folding Stock and Buffer Assembly - Pattern 1

Standard Replacement Stock and Buffer Assembly U9 for Stemple 76/45 pattern 1 setups Contact us with your serial number to determine compatibility. (info@brpguns.com, 678-425-9585) Includes: Ace Short Stock (AKFX) .5" Rubber Butt...

MSRP:

Now: $360.00
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Picatinny Rail for Shroud

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

MSRP:

Now: $32.00
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U9 10.35" barrel threaded .578"-28

9mm 10.35" long barrel Stainless Steel Threaded .578"-28 on end

MSRP:

Now: $160.00
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Universal Front Takedown Pin

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

MSRP:

Now: $15.95
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578" - 28 thread protector

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

MSRP:

Now: $25.00
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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...

MSRP:

Now: $4.85
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Mainspring STG U9, 34k, & Suomi - New Production

New Production Mainspring for Suomi KP31, Swed M37, STG 76, Stemple Suomi, STG U9, STG 34k

MSRP:

Now: $14.00
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Stemple STG 9mm Barrel 12.75"

12.75" barrel for BRP Stemple Takedown Guns. FULL AUTO CHAMBER SPEC. Extractor Location The extractor relief on this barrel is setup for the BRP-Stemple extractors and would have to be enlarged to accommodate the KP31 extractor for...

MSRP:

Now: $160.00
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Stemple STG 9mm Barrel 16" Threaded 1/2-28

16" barrel for BRP Stemple Takedown Guns. Works with slant pattern KP31 shroud. Will work with compensated shroud if the exit hole is opened to .635". Extractor Location The extractor relief on this barrel is setup for the...

MSRP:

Now: $135.00
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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.

MSRP:

Now: $4.50
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STG Universal Barrel Shroud - M31 Compensated Front (LONG PICATINNY RAIL)

M31 Compensated Barrel Shroud with new parkerized finish for use with 12.875" 9mm barrels. Picatinny rail mount on bottom of shroud. Compatible with all Universal pattern Stemple guns and original KP31 SMGs. *** 16" barrels wil...

MSRP:

Now: $220.00
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STG Universal Barrel Shroud - M31 Slant Front (LONG PICATINNY RAIL)

M31 Slant Barrel Shroud with new parkerize finish for use with 12.875" and 16" 9mm barrels. The 16" barrels are threaded 1/2-28. Picatinny rail mount on bottom of shroud. Compatible with all Universal pattern Stemple guns and...

MSRP:

Now: $220.00
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Stemple Trunion Retaining Pins

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

MSRP:

Now: $12.50
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Stemple STG U-9mm, 76, 76W, 34k Trunion (Old Locknut Type)

2006-2010 Threaded Type Trunion. Standard replacement Trunion Assembly for Stemple STG pattern trunions: STG U-9mm, STG 76, STG 76W, & STG 34k Includes ejector, lock nut, and retaining pins.

MSRP:

Now: $200.00
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STG-U-34k/76/76W Buffer Rod

STG Buffer Rod for STG34k, 76, 76W to be used with standard Suomi mainsprings

MSRP:

Now: $12.00
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STG-U-34k/76/76W Buffer

Polyurethane buffer for STG34k, 76, 76W

MSRP:

Now: $11.50
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Suomi/STG Magazine Latch Assembly

M31 Magazine Latch Assembly: Latch, Spring, & Retaining Pin For Suomi KP31, & STG 34k, 76, 76w (please specify which type when ordering)

MSRP:

Now: $22.00
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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.

MSRP:

Now: $45.00
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STG Multi-Tool

Type a description for this product here...

MSRP:

Now: $17.50
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Barrel Jacket Retaining Pin: for 2008-2010 ptrn 34k, 76, 76W

Barrel Jacket Retaining Pin: for 2008-2010 ptrn 34k, 76, 76W retains barrel jacket to magazine housing

MSRP:

Now: $4.00
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STG 76, 76W, 34k 2006-2010 pattern barrel Lock Nut

This part threads to the front of the trunion to retain the barrel. Includes nut only.

MSRP:

Now: $30.00
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Stemple Trunion U9, 76, Stemple Suomi & 34k - 2 Pin Pattern

Standard replacement Trunion Assembly for Stemple STG Standard Bolt Setups with pin mounts: Includes ejector and retaining pins.

MSRP:

Now: $350.00
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Ejector U9, 76, Stemple Suomi, & 34k

Standard replacement ejector for Stemple STG pattern trunions: STG U-9mm, STG 76, STG 76W, & STG 34k Includes ejector blade and retaining pin.

MSRP:

Now: $12.00
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STG U9 Magazine Housing (complete - Black Anodized Finish)

Standard replacement magazine housing for 2011 pattern and later Universal 9mm setups for KP31 drums and mags. Black Anodized Finish This is a complete magazine housing for 1.375" OD Stemple 76/45 Receiver (STG-U and STG-76 pattern) to allow use with...

MSRP:

Now: $350.00
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STG 43 Screw and Pin Kit

Screws, Spring, and Pin Set for STG 43 Lower Housing. Includes: 1: 8-32 X .25 socket set screw 1: 8-32 X .5 socket set screw 6: 8-32 X 3/8 low head 1: .25 X .875 long dowel 1: .25 X .75...

MSRP:

Now: $10.00
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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

MSRP:

Now: $12.00
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Adjustable Bolt System Mainspring

This is the standard mainspring 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...

MSRP:

Now: $14.00
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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 Wolff spring and mounting pin

MSRP:

Now: $25.00
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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.

MSRP:

Now: $9.00
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STG Universal Barrel Latch

Suomi-type barrel latch setup for use on the: STG 76 (2011 pattern) STG 34k (2011 pattern) STG 43 STG Universal

MSRP:

Now: $12.00
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STG Universal Barrel Nut

Takes place of barrel shroud to lock the barrel to the trunion without the need for a shroud

MSRP:

Now: $35.00
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STG Universal Barrel Bushing for use with original Swed & Finnish Shrouds

STG Universal Barrel Bushing: fits between barrel and shroud for locking system. This is necessary for use with original Swedish and Finnish barrel shrouds.

MSRP:

Now: $8.00
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STG Universal 7.62x25 Barrel - 9"

STG Universal 7.62x25 Barrel - 9", threaded 1/2-28 Rifle Twist 1:9.5 Used on: STG-U STG43 Works with M37 Shrouds or Barrel Nut setups. US Made 4140 Alloy Steel Parkerized Metal Finish

MSRP:

Now: $150.00
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STG Universal 9mm Barrel - 10.35"

STG Universal 9mm Barrel - 10.35", threaded 1/2-28 Used on: STG-U STG43 STG76 Works with M37 Shrouds, and Aluminum Shroud setups both from 2012 +. US Made 41v50 Alloy Steel Parkerized Metal Finish Twist Rate: 1:10

MSRP:

Now: $160.00
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STG Universal Rear Takedown Screw

STG Universal Rear Takedown Screw for: STG43 STG-U STG76

MSRP:

Was: $15.50

Now: $14.00
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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

MSRP:

Now: $695.00
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Picatinny Rail Top for Stemple Receiver

Picatinny Rail Top for Stemple Receiver with mount screws

MSRP:

Now: $32.00
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STG 43 Ejection Port Shield

STG 43 Ejection Port Shield with Cross Pin

MSRP:

Now: $125.00
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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...

MSRP:

Now: $2.75
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1/2 - 28 to 15mm x 1mm thread adapter

1/2 - 28 to 15mm x 1mm thread adapter(1/2" wrench flat for standard M16 armorer's wrench. Machined from 4140 chrome-moly steel. Black Oxide or Parkerized finishes available) This part adapts the AR standard barrel thread and other 1/2 - 28 threads...

MSRP:

Now: $17.50
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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. Video Link https://rumble.com/v6qjpeq-suomi-kp31-trigger-packs-in-stemple-7645-smgs.html

MSRP:

Now: $100.00
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9mm & 7.62x25 Bolt for Adjustable Bolt System - Nickel-Boron Coated

STG Universal Heavy Adjustable System: 9mm / 7.62x25 Bolt NiB One™ plating This is an electroless NIB nickel-boron plating system that is comprised of boron, nickel, and other metals to produce a very hard, wear resistant surface with...

MSRP:

Was: $450.00

Now: $340.00
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STG U9 Spare Parts