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    • STG U9 Spare Parts

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    • KP31 Barrel Shim - .001 thick KP31 Barrel Shim - .001 thick

      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...

      $2.75
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    • 1/2" - 28 thread protector

      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.

      $25.00
      Add to Cart
    • U9 Folding Stock and Buffer Assembly - Pattern 1

      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...

      $360.00
      Add to Cart
    • Picatinny Rail for Shroud

      Picatinny Rail for Shroud

      Picatinny Rail for MN shroud and Suomi Shrouds that have been drill and tapped by BRP 6.49" long Radius bottom 1 3/8" for shrouds and Stemple Receiver.  3x Mount Screws included (8-32 Low Head Cap Screws)

      $32.00
      Add to Cart
    • 578" - 28 thread protector 578" - 28 thread protector

      578" - 28 thread protector

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

      $25.00
      Add to Cart
    • KP31 Shroud Shim - .005" thick KP31 Shroud Shim - .005" thick

      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...

      $4.85
      Add to Cart
    • Stemple STG 9mm Barrel 12.75" Stemple STG 9mm Barrel 12.75"

      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...

      $160.00
      Add to Cart
    • PIAT Cleaning Brush PIAT Cleaning Brush

      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.

      $4.50
      Add to Cart
    • STG Combo Wrench

      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.

      $45.00
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    • STG U9 Magazine Housing (complete - Black Anodized Finish) STG U9 Magazine Housing (complete - Black Anodized Finish)

      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...

      $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...

      $10.00
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    • Adjustable Bolt System Mainspring

      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...

      $14.00
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    • STG Universal Extractor with Spring and Pin

      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

      $25.00
      Add to Cart
    • STG Universal 7.62x25 Barrel - 9" STG Universal 7.62x25 Barrel - 9"

      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  

      $150.00
      Add to Cart
    • STG Universal 9mm Barrel - 10.35" STG Universal 9mm Barrel - 10.35"

      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  

      $160.00
      Add to Cart
    • Picatinny Rail Top for Stemple Receiver Picatinny Rail Top for Stemple Receiver

      Picatinny Rail Top for Stemple Receiver

      Picatinny Rail Top for Stemple Receiver with mount screws   6.49" long Radius bottom 1 3/8" for shrouds and Stemple Receiver.  3x Mount Screws included (8-32 Low Head Cap Screws)

      $32.00
      Add to Cart
    • KP31 Barrel Shim - .003 thick KP31 Barrel Shim - .003 thick

      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...

      $2.75
      Add to Cart
    • 1/2 - 28 to 15mm x 1mm thread adapter 1/2 - 28 to 15mm x 1mm thread adapter

      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...

      $17.50
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    • Stemple U9 Trigger Pack

      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

      $100.00
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    • STG Universal 5" Shroud and Barrel Combo STG Universal 5" Shroud and Barrel Combo

      STG Universal 5" Shroud and Barrel Combo

      Compatible with all STGl 4 lug trunion (KP31 style) guns.  Material: Steel Finish: Parkerized OAL: 3.65" • 8-32 threaded holes are at 90deg increments to fit BRP SHORT RAIL   Includes: 1 x Shroud Assembly 1 x Rail with...

      $550.00
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    • Extra Rail for 5" steel shroud Extra Rail for 5" steel shroud

      Extra Rail for 5" steel shroud

      These rails are specifically for machined for the BRP Short Steel Shroud.  A total of 4 rails can be attached at 90deg increments. Includes: 1 x Rail  Material: Aluminum  Finish: Anodized OAL: 2" 2 x attaching...

      $38.50
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    • U9 5" Long Barrel Threaded 5/8"-24 U9 5" Long Barrel Threaded 5/8"-24

      U9 5" Long Barrel Threaded 5/8"-24

      STG Universal Barrel for use with short shroud setup Includes: 1 x Barrel Cal: 9mm  Stainless Steel Threaded 5/8"-24 on end Polished chamber and feed ramp 1:10 twist   Recommended Accessories: 3 Lug Barrel Adapter Timing...

      $150.00
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    • 5/8"-24 3-Lug Barrel Adapter 5/8"-24 3-Lug Barrel Adapter

      5/8"-24 3-Lug Barrel Adapter

      STG Universal Barrel for use with short shroud setup Includes: 1 x 3-Lug Barrel Adapter Made to B&T / HK standard for 45acp/10mm/40Cal with 16.5mm front diameter Material 4140 - Hardened - Parkerized Finish These are used with both the...

      $55.00
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    • 3-Lug Barrel Adapter for 37/64"(.578)-28 3-Lug Barrel Adapter for 37/64"(.578)-28

      3-Lug Barrel Adapter for 37/64"(.578)-28

      STG Universal Barrel for use with short shroud setup Includes: 1 x 3-Lug Barrel Adapter Made to B&T / HK standard for 45acp/10mm/40Cal with 16.5mm front diameter Material 4140 - Hardened - Parkerized Finish These are used with both the...

      $55.00
      Add to Cart
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