<![CDATA[BRP CORP: New Products - Swedish M37/39 Individual Parts]]> https://www.brpguns.com Tue, 09 Jun 2026 18:14:54 +0000 <![CDATA[KP31 Shroud Shim - .01" thick]]> https://www.brpguns.com/kp31-shroud-shim-01-thick/ Fri, 30 Dec 2022 17:13:16 +0000 https://www.brpguns.com/kp31-shroud-shim-01-thick/ KP31 Shroud Shim - .01" thick

Copied from original parts and made from stainless steel.

 

Thickness .01"

 

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 accu..

Price: $4.85

]]> KP31 Shroud Shim - .01" thick

Copied from original parts and made from stainless steel.

 

Thickness .01"

 

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 accu..

Price: $4.85

]]> Copied from original parts and made from stainless steel.

 

Thickness .01"

 

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 accu..]]> <![CDATA[KP31 Suomi SEMI AUTO HEADSPACE pattern 9mm Barrel 16" Threaded 1/2-28]]> https://www.brpguns.com/copy-of-stemple-stg-9mm-barrel-16-threaded-1-2-28/ Thu, 30 Jul 2020 13:42:43 +0000 https://www.brpguns.com/copy-of-stemple-stg-9mm-barrel-16-threaded-1-2-28/ KP31 Suomi SEMI AUTO HEADSPACE pattern 9mm Barrel 16" Threaded 1/2-28

16" barrel for Semi Auto KP31.  

Works with slant pattern KP31 shroud.  Will work with compensated shroud if the exit hole is opened to .635".

 

HEADSPACE on Closed Bolt Semi Auto Guns vs Open Bolt / Fixed Firing Pin Blow Back..

Price: $135.00

]]> KP31 Suomi SEMI AUTO HEADSPACE pattern 9mm Barrel 16" Threaded 1/2-28

16" barrel for Semi Auto KP31.  

Works with slant pattern KP31 shroud.  Will work with compensated shroud if the exit hole is opened to .635".

 

HEADSPACE on Closed Bolt Semi Auto Guns vs Open Bolt / Fixed Firing Pin Blow Back..

Price: $135.00

]]> 16" barrel for Semi Auto KP31.  

Works with slant pattern KP31 shroud.  Will work with compensated shroud if the exit hole is opened to .635".

 

HEADSPACE on Closed Bolt Semi Auto Guns vs Open Bolt / Fixed Firing Pin Blow Back..]]> <![CDATA[KP31 Shroud Shim - .002" thick]]> https://www.brpguns.com/copy-of-kp31-shroud-shim-005-thick/ Thu, 23 Feb 2017 15:02:55 +0000 https://www.brpguns.com/copy-of-kp31-shroud-shim-005-thick/ 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 acc..

Price: $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 is a very useful part for acc..

Price: $4.85

]]> 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 acc..]]> <![CDATA[Suomi 36 rd stick magazine]]> https://www.brpguns.com/copy-of-suomi-drum/ Tue, 09 Aug 2016 17:49:58 +0000 https://www.brpguns.com/copy-of-suomi-drum/ 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 y..

Price: $30.00

]]> 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 y..

Price: $30.00

]]> 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 y..]]> <![CDATA[Suomi KP31, Swed M37, Stemple U9 Trigger Pack Sear Spring]]> https://www.brpguns.com/copy-of-stemple-u9-trigger-pack/ Wed, 04 May 2016 16:41:32 +0000 https://www.brpguns.com/copy-of-stemple-u9-trigger-pack/ 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

Price: $5.20

]]> 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

Price: $5.20

]]> M31 Trigger Pack Sear Spring for original KP31 and Stemple U series guns with Suomi pattern trigger packs

]]> <![CDATA[KP31 Barrel Shim - .001 thick]]> https://www.brpguns.com/kp31-barrel-shim-001-thick/ Sat, 26 Mar 2016 19:52:17 +0000 https://www.brpguns.com/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 barre..

Price: $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.

 

This part tightens the barre..

Price: $2.75

]]> 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 barre..]]> <![CDATA[KP31 Shroud Shim - .005" thick]]> https://www.brpguns.com/kp31-shroud-shim-005-thick/ Thu, 07 Jan 2016 14:28:40 +0000 https://www.brpguns.com/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 acc..

Price: $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 is a very useful part for acc..

Price: $4.85

]]> 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 acc..]]> <![CDATA[Mainspring STG U9, 34k, & Suomi - New Production]]> https://www.brpguns.com/copy-of-m31-37-mainspring/ Fri, 03 Jul 2015 14:18:58 +0000 https://www.brpguns.com/copy-of-m31-37-mainspring/ Mainspring STG U9, 34k, & Suomi - New Production

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

Price: $14.00

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

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

Price: $14.00

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

]]> <![CDATA[Stemple STG 9mm Barrel 12.75"]]> https://www.brpguns.com/stemple-stg-9mm-barrel-12-75/ Fri, 26 Jun 2015 09:57:14 +0000 https://www.brpguns.com/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 full..

Price: $160.00

]]> 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 full..

Price: $160.00

]]> 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 full..]]> <![CDATA[KP31 Barrel Shim - .003 thick]]> https://www.brpguns.com/products/Suomi-KP31-Barrel-Shim.html Thu, 28 Oct 2010 10:56:26 +0000 https://www.brpguns.com/products/Suomi-KP31-Barrel-Shim.html 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 fixin..

Price: $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 accurizing you gun or just fixin..

Price: $2.75

]]> 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 fixin..]]>