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STG U9 Spare Parts

  • 1/2 - 28 to 15mm x 1mm thread adapter
    $17.50 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...

  • 1/2" - 28 thread protector
    $25.00 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...

  • 578" - 28 thread protector
    $25.00 578" - 28 thread protector
    Stainless Steel Thread Protector & Flash Hider for 578" - 28 Threaded U9 and U45 Barrels.    Features wrench flats for easy removal...

  • A2 Stock
    $42.50 A2 Stock
    A2 stock    Can be used with:  STG 43 STG Universal

  • Barrel Jacket Retaining Pin: for 2008-2010 ptrn 34k, 76, 76W
    $4.00 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

  • CAR Stock
    $42.50 CAR Stock
    CAR Stock   Can be used with:  STG 43 STG Universal

  • Ejector U9, 76, Stemple Suomi, & 34k
    $12.00 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.

  • Heavy Bolt System - 9mm & 7.62x25 Bolt
    $245.00 Heavy Bolt System - 9mm & 7.62x25 Bolt
    STG Universal Heavy Bolt System: 9mm / 7.62x25 Bolt  

  • Heavy Bolt System - ALUMINUM Bolt Extension for CAR
    $45.00 Heavy 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...

  • Heavy Bolt System - Bolt Extension Conversion for CAR to A2
    $9.00 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...

  • Heavy Bolt System - Bolt Extension for A2
    $45.00 Heavy Bolt System - Bolt Extension for A2
    STG Universal 9mm/7.62x25 Bolt Extension for STG Universal (STG-U) & STG 43 with A2 length stock

  • Heavy Bolt System - Bolt Guide
    $595.00 Heavy Bolt System - Bolt Guide
    STG Universal Bolt Guide for all setups utilizing the Heavy Bolt System (9mm, 7.62x25 and 45 acp). Ejector Included

  • Heavy Bolt System - STEEL Bolt Extension for CAR
    $45.00 Heavy Bolt System - STEEL Bolt Extension for CAR
    Steel - CAR Length Bolt Extension for STG Universal Heavy Bolt System U9SF, U45, & U762  

  • Heavy Bolt System Mainspring - High Rate
    $9.00 Heavy Bolt System Mainspring - High Rate
    Reduced power mainspring compared to original AR.  The reduced resistance results in higher cyclic rates. Used in: STG Universal  STG 43 or can be used with standard CAR AR15s or...

  • Heavy Bolt System Mainspring - Standard
    $8.00 Heavy Bolt System Mainspring - Standard
    Standard CAR mainspring to be used with both stock configurations with the:   STG Universal U9SF, U7.62, U45 STG 43

  • KP31 Barrel Shim - .001 thick
    $2.75 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...

  • KP31 Barrel Shim - .003 thick
    $2.75 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...

  • KP31 Shroud Shim
    $4.85 KP31 Shroud Shim
    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...

  • Mainspring STG U9, 34k, & Suomi - New Production
    $10.00 Mainspring STG U9, 34k, & Suomi - New Production
    New Production Mainspring for Suomi KP31, Swed M37, STG 76, Stemple Suomi, STG U9, STG 34k

  • Picatinny Rail for Shroud
    $32.00 Picatinny Rail for Shroud
    Picatinny Rail for MN shroud and Suomi Shrouds that have been drill and tapped by BRP   3x Mount Screws includeds

  • Picatinny Rail Top for Stemple Receiver
    $32.00 Picatinny Rail Top for Stemple Receiver
    Picatinny Rail Top for Stemple Receiver with mount screws

  • ProMag Swiss Style Grip
    $14.00 ProMag Swiss Style Grip
    ProMag Swiss Style Grip

  • Standard Bolt Trunion U9, 76, Stemple Suomi & 34k
    $200.00 Standard Bolt Trunion U9, 76, Stemple Suomi & 34k
    Standard replacement Trunion Assembly for Stemple STG Standard Bolt Setups: Includes ejector and retaining pins.

  • Stemple U9 Trigger Pack
    $65.00 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.

  • Stemple U9 Trigger Pack Sear Spring
    $5.20 Stemple U9 Trigger Pack Sear Spring
    M31 Trigger Pack Sear Spring for original KP31 and Stemple U seris guns with Suomi patter trigger packs

  • STG 43 Ejection Port Shield
    $125.00 STG 43 Ejection Port Shield
    STG 43 Ejection Port Shield with Cross Pin

  • $10.00 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...

  • STG 76, 34k 2008-2010 pattern barrel 8"
    $75.00 STG 76, 34k 2008-2010 pattern barrel 8"
    2008-2010 Pattern Short Barrel for picatinny shroud

  • STG 76, 76W, 34k 2006-2010 pattern barrel Lock Nut
    $25.00 STG 76, 76W, 34k 2006-2010 pattern barrel Lock Nut
    This part threads to the front of the trunion to retain the barrel.

  • STG Combo Wrench
    $30.00 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
    $17.50 STG Multi-Tool
    Type a description for this product here...

  • STG U & 76 Magazine Housing (complete)
    $260.00 STG U & 76 Magazine Housing (complete)
    Standard replacement magazine housing for 2011 pattern STG 76 and STG-U 9mm. This is a complete magazine housing for 1.375" OD Stemple 76/45 Receiver (STG-U and STG-76 pattern) to allow use with Finnish and Swedish pattern...

  • STG Universal 7.62x25 Barrel - 9"
    $100.00 STG Universal 7.62x25 Barrel - 9"
    STG Universal 7.62x25 Barrel - 9", threaded 1/2-28 Used on: STG-U  STG43   Works with M37 Shrouds or Barrel Nut setups.   US Made 4140 Alloy Steel Parkerized Metal...

  • STG Universal 9mm Barrel - 10"
    $120.00 STG Universal 9mm Barrel - 10"
    STG Universal 9mm Barrel - 10", threaded 1/2-28 Used on: STG-U  STG43 STG76   Works with M37 Shrouds, Barrel Nut, and MN Shroud setups.   US Made 4140 Alloy Steel Parkerized Metal Finish Twist Rate:...

  • STG Universal 9mm Bolt for standard rate
    $245.00 STG Universal 9mm Bolt for standard rate
    STG Universal 9mm Bolt with Extractor for STG Universal (STG-U) (standard-rate system / full round)

  • STG Universal Barrel Bushing
    $8.00 STG Universal Barrel Bushing
    STG Universal Barrel Bushing: fits between barrel and shroud for locking system.

  • STG Universal Barrel Nut
    $20.00 STG Universal Barrel Nut
    Takes place of barrel shroud to lock the barrel to the trunion without the need for a shroud

  • STG Universal Barrel Shroud - M31 Compensated Front (LONG PICATINNY RAIL)
    $140.00 STG Universal Barrel Shroud - M31 Compensated Front (LONG PICATINNY RAIL)
    M31 Slant Barrel Shroud with new parkerize finish for use with 13" barrels For STG 43, 34k 2011 ptrn, 76 2011 ptrn, & U ptrn 9" rail mount on bottom of shroud

  • STG Universal Barrel Shroud - M31 Slant Front (LONG PICATINNY RAIL)
    $140.00 STG Universal Barrel Shroud - M31 Slant Front (LONG PICATINNY RAIL)
    M31 Slant Barrel Shroud with new parkerize finish for use with 13" barrels For STG 43, 34k 2011 ptrn, 76 2011 ptrn, & U ptrn 9" rail mount on bottom of shroud

  • STG Universal Charging Handle
    $15.00 STG Universal Charging Handle
    STG Charging Handle for: STG Universal STG 76 STG 76W STG 34k STG 43 Stemple Suomi

  • STG Universal Extractor with Spring and Pin
    $25.00 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   Includes extra power Wolfe spring and mounting...

  • STG Universal Rear Takedown Screw
    $9.00 STG Universal Rear Takedown Screw
    STG Universal Rear Takedown Screw for: STG43 STG-U STG76

  • STG-U-34k/76/76W Buffer
    $5.00 STG-U-34k/76/76W Buffer
    Polyurethane buffer for STG34k, 76, 76W

  • STG-U-34k/76/76W Buffer Rod
    $12.00 STG-U-34k/76/76W Buffer Rod
    STG Buffer Rod for STG34k, 76, 76W to be used with standard Suomi mainsprings

  • Suomi KP31 - Stemple STG 9mm Barrel 12.75"
    $120.00 Suomi KP31 - Stemple STG 9mm Barrel 12.75"
    12.75" barrel copatible with BRP Stemple Takedown Guns and Finnish KP31.   Designed to work with original KP31 Suomi M31 barrel shrouds. US Made 4140 Alloy Steel Parkerized Metal Finish Twist Rate: 1:10 Muzzle...

  • Suomi KP31 - Stemple STG 9mm Barrel 16"
    $120.00 Suomi KP31 - Stemple STG 9mm Barrel 16"
    16" barrel Copatible with BRP Stemple Takedown Guns and Finnish KP31.   Works with slant pattern KP31 shroud.  Will work with compensated shroud if the exit hole is opened to .635". Case exposed on rear: .12" - ...

  • Suomi Magazine
    $25.00 Suomi Magazine
    36rd original Finnish Suomi drum. Works with M31/KP31, M37/39, M45. (not for sale where prohibited) Excellent Condition         MAGAZINE SHIPPING RESTRICTIONS   California...

  • Suomi/STG Magazine Latch Assembly
    $15.00 Choose Options 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)

  • Trunion Retaining Pins
    $7.50 Choose Options Trunion Retaining Pins
    Standard set of replacement Trunion Retaining Pins.  (2 pins included)

  • U Lower Assembly
    $400.00 U Lower Assembly
    Standard U Lower Assembly for use with U9, U9SF and U45

  • U9 10.35" barrel threaded .578"-28
    $120.00 U9 10.35" barrel threaded .578"-28
    9mm  10.35" long barrel  Stainless Steel Threaded .578"-28 on end

  • U9 Stock and Buffer Assembly
    $325.00 U9 Stock and Buffer Assembly
    Standard Replacement Stock and Buffer Assembly for U9

  • Universal Front Takedown Pin
    $4.00 Universal Front Takedown Pin
    Standard HK Small Pin used as front takedown pin for the U9, U9SF, U45, U7.62, STG76 and Stemple Suomi