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Swedish M37/39 Individual Parts

  • 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 - .002" thick
    $4.85 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...

  • KP31 Shroud Shim - .005" thick
    $4.85 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...

  • M31 Bolt (WITHOUT EXTRACTOR)
    $20.00 M31 Bolt (WITHOUT EXTRACTOR)
     Finnish Suomi Machine Gun Bolt   (WITHOUT EXTRACTOR) Extractor not included.    

  • M31/37 Barrel Jacket Latch
    $6.50 M31/37 Barrel Jacket Latch
    Removed from original receiver

  • M31/37 Mainspring
    $10.00 M31/37 Mainspring
    Original Mainspring

  • M37 Charging Handle
    $25.00 M37 Charging Handle
    Original M37 Charging Assembly: includes; handle, spring, bolt catch, and pin

  • M37 Rear Cap
    $10.00 M37 Rear Cap
    Original Rear Cap in Excellent Condition

  • 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

  • Stemple STG 9mm Barrel 12.75"
    $120.00 Stemple STG 9mm Barrel 12.75"
    12.75" barrel for BRP Stemple Takedown Guns.  These can be adapted for use with Finnish KP31 and semi auto variants.   Works with slant pattern KP31 shroud.  Will work with compensated shroud if the exit...

  • Stemple STG 9mm Barrel 16" Threaded 1/2-28
    $120.00 Stemple STG 9mm Barrel 16" Threaded 1/2-28
    16" barrel for BRP Stemple Takedown Guns.  These can be adapted for use with Finnish KP31 and semi auto variants.   Works with slant pattern KP31 shroud.  Will work with compensated shroud if the exit hole is...

  • Suomi 36 rd stick magazine
    $28.50 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...

  • Suomi Drum
    $65.00 Suomi Drum
    70rd original Finnish Suomi drum. Works with M31/KP31, M37/39, M45. (not for sale where prohibited) Excellent condition

  • Suomi Drum Tool
    $4.50 Suomi Drum Tool
    Fitted tool for the Suomi Drum Feeder Arm for 1/4" hex drive tool.   It allows you to remove the arm for retensioning the drum.

  • Suomi KP31 / Swed M37 Screws: Stock and Trigger
    $14.50 Suomi KP31 / Swed M37 Screws: Stock and Trigger
    Includes the trigger screw and trigger screw keeper, and stock/tang screw

  • Suomi KP31, Swed M37, Stemple U9 Trigger Pack Sear Spring
    $5.20 Suomi KP31, Swed M37, Stemple U9 Trigger Pack Sear Spring
    M31 Trigger Pack Sear Spring for original KP31 and Stemple U seris guns with Suomi patter trigger packs