Bolt Carrier Groups
Discover top-quality Heckler and Koch bolt carrier groups at HK Parts, including the HK MP5 bolt carrier, HK G3 bolt carrier, and HK93 bolt carrier. Explore our selection of full auto bolt carriers, enhanced bolt carriers, and tungsten-filled bolt carriers for models like the HK416, HK91, and HK MR556. Ensure reliability with factory HK bolt carriers and US-made bolt carriers. Shop now for chrome-lined bolt carriers, firing pin assemblies, and complete bolt heads to maintain 922r compliance and superior performance.
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HK MP5K Bolt Carrier - Full Auto - .40 S&W / 10mm
RCM
$157.95MP5K 40/10 Full Auto Bolt Carrier - Latest Upgraded Version This part is built from billet ordnance steel. This US-made MP5K 40,10 style carrier is made with Tungsten and is heat-treated, providing the finest American-made carrier...HKP-01826$157.95 -
On Sale
HK MP5F Bolt Group - Complete
H&K Heckler & Koch
Now: $2,448.95Was: $2,999.95H&K MP5 F Bolt Group Complete The bolt head, bolt carrier, and all F/A-related parts have been restricted by HK and will become increasingly harder to find. The F in the MP5F designation was added after the French Military asked HK to "beef"...HKP-00953Now: $2,448.95Was: $2,999.95 -
HK UMP, USC Recoil Rod Spring - Enhanced
HKP HK Parts
$11.95HKP Enhanced Recoil Rod Spring for HK UMP, USC Upgrade or replace your UMP recoil system with HKP's enhanced heavy recoil rod spring from HK Parts. This spring is approximately 10 percent stronger than a standard recoil spring, making it ideal for...HKP-22507$11.95 -
On Sale
HK UMP, USC Bolt Carrier - Semi Auto - .45 ACP - BLEMISHED
USA
Now: $239.95Was: $399.95USA HK UMP/USC .45 Semi Auto Bolt Carrier - Complete - BLEMISHED ONLY 1 UNIT AVAILABLE - AS PICTURED CRACK ON REAR TAB COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE...HKP-18588-BNow: $239.95Was: $399.95 -
HK91, G3 Bolt Carrier - Full Auto - SURPLUS - FMP
H&K Heckler & Koch
$129.95Heckler and Koch's F/A Bolt Carrier for HK G3 and HK91 - FMP - SURPLUS One UNIT ONLY UNIT QUALITY MAY VARY - SEE PHOTOS FOR EXAMPLE OF CONDITION RANGE Used full-auto steel bolt carrier manufactured by FMP on original Heckler and Koch tooling. Compatible...HKP-22160$129.95 -
On Sale
HK417, MR762 Bolt Head - Complete - E1
H&K Heckler & Koch
Now: $536.95Was: $595.95Heckler and Koch 417 E1 Bolt Head - Complete Rare factory bolt head for the HK417. Compatible With: HK MR762 HK417HKP-22037Now: $536.95Was: $595.95 -
HK91, G3, PTR Bolt Head - Complete - Used
EBO
$99.95EBO HK G3 & HK 91 & PTR Bolt Head Complete - Used Greek HK Contract Date Coded EBO bolt head is manufactured in Greece by Hellenic Arms Industry, utilizing HK tooling and prints. Since the 1980s, it has proven to be one of the best upgrades for...HKP-21903$99.95 -
HK MP5, MP5K 40/10 SD 115 Degree Locking Piece
RCM
$44.95RCM HK MP5 & MP5K 40/10 SD 115 Degree Locking Piece Compatible With: MP5/K 10 MP5/K 40HKP-21525$44.95 -
On Sale
Ruger Precision Rifle Bolt Shroud
Tactical Precision MFG
Now: $28.95Was: $89.99Tactical Precision MFG Aluminum Ruger Precision Rifle Bolt Shroud Replacement bolt shroud for Ruger Precision rifles made from machined aluminum and colored in black Cerakote.HKP-20775Now: $28.95Was: $89.99 -
HK SL6 Bolt Head - Complete with Locking Piece
H&K Heckler & Koch
$299.95HK SL6 Bolt Head Complete with Locking Piece New old stock and the last units available from HK. Each combo set is a new HK SL6 bolt head complete and locking piece. New unfired but may have some storage marks or light surface imperfections. Last call as...HKP-17496$299.95 -
$248.29 -
HK940, SL7 30-06 Locking Piece
H&K Heckler & Koch
$89.95H&K HK 940/SL7 30-06 Locking PieceHKP-02108$89.95