STG 34k Parts and Accessories

MG34 G10 Grip Set with Mounting Hardware (BLACK or BROWN)

Newly Made MG34 Grip Set with Mounting Hardware. Includes: Left and Right Grip Panels made from  G10, a modern composite material which is total impervious to water, oil, solvent and most common chemicals. They are not injection molded plastic...

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...

BRP STG T Shirt by Nine Line

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

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

Slide Lock Trunion: Locking Piece

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

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

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

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...

MG34 and MG42 Trigger Housing Pins (1 male, 1 female) - Newly Made

Trigger Housing Mount Pins: mounts trigger housing to receiver Newly Made Items Copied from the Original German Design Black Oxide Finish Includes:  1 Male Pin 1 Female Pin Finding original MG34/MG42 trigger housing pins can be...

Lot 3: MG34/42 Trigger Housing Pins (2 male, 2 female)

Trigger Housing Mount Pins: mounts trigger housing to receiver Original Items  Actual Items Pictured Includes  2 Male Pins 2 Female Pins *** NOTED BLEMISHES: One of the Male pins is missing a leg but still grabs the Female...

U9 8.64" barrel threaded 1/2"-28

9mm  8.64" long barrel  Stainless Steel Threaded .1/2"-28 on end For use on 2010 pattern shroud  (see reference pic)

STG34k Magazine Housing NiB Plated

2011 Pattern STG34k Magazine Housing (complete with magazine latch and barrel latch) Nickel Boron (NiB) Plated

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...

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"

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

MG34 Trigger Spring

Reproduction copy of original Trigger Spring: This is the spring that rests on the trigger spring base (fenderknoph) and inside the back of the trigger itself

34k Stock Body with Butt Plate with Rubber Pad

New stock body and butt plate with rubber pad for the STG 34k setup with.  1/2" and 1" length rubber pads are available (1/2" pictured). Made from aluminum with hard anodize plating.  Features two points for use of modular quick-detachable...

34k Butt Plate with Rubber Pad

New butt plate with rubber pad for the STG 34k setup with up/down adjustable butt plates.  1/2" and 1" length rubber pads are available (1/2" pictured). Made from aluminum with hard anodize plating.  Features two points for use of modular...

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...

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...

U9 10.35" barrel threaded 1/2"-28

9mm  10.35" long barrel  Stainless Steel Threaded .1/2"-28 on end

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...

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...

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.

Picatinny Rail for Shroud

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

U9 10.35" barrel threaded .578"-28

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

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...

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

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

Stemple STG 9mm Barrel 12.75"

12.75" barrel for BRP Stemple Takedown Guns.     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 full auto and semi auto...

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...

STG 9mm bolt - 34k & Stemple Suomi ( with NiB One™ plating)

Original STG 34k & Stemple Suomi Bolt Complete with Extractor Assembly.  This bolt is identical to the U9 bolt with the exception of the angle cut for the sear geometry.     NiB One™ plating This is an electroless NIB...

(Repro) MG34 Trigger Spring Base: fenderknoph

Reproduction: made from stainless steel   Spring base only.  Spring not included.

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.

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...

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...

34k Sear Lever Pin (pin only)

  Includes Sear Lever Pin (Sear Lever Not Included)

STG 34k Screw Kit

Includes:   1 x 8-32 x 3/16 dog point   1 x 8-32 x 1/4 dog point   3 x  8-32 X 1/4 Low Head    1 x  6-32 X .5 socket set screw (barrel jacket timing screw)   1 x  8-32 x 1/2 Low Head (Barrel Jacket...

STG34k Buffer Cap

STG34k Buffer Cap Only Second pattern without spring tab 

34k Stock Screw

34k Stock Screw for Short/Fixed STG34k Stock Assembly

Stemple Trunion Retaining Pins

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

Stemple STG U-9mm, 76, 76W, 34k Trunion (Threaded 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.

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

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

STG34k Buffer Assembly (complete)

STG34k Buffer Assembly: Buffer, Buffer Cap, Retaining Pins, Buffer Rod, Polyurethane Buffer, Rear Takedown Pin, Rear Takedown Pin Second pattern without spring tab 

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

Polyurethane buffer for STG34k, 76, 76W

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)

STG34k Magazine Housing

2011 Pattern STG34k Magazine Housing (complete with magazine latch and barrel latch) The rear is also designed to fit the stocket of a Finish KP31 stock.  

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...

34k Sear Lever Assembly

  Includes Sear Lever and Sear Lever Pin

34k Sear Assembly

Complete sear assembly for the STG34k Includes Sear and Sear Spring