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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On Sale
HK91, G3 Complete Bolt Head - Enfield HK Contract - Used
H&K Heckler & Koch
Now: $129.95Was: $179.95HK G3 & HK 91 & PTR Bolt Head Complete - British Enfield - Exc/Like New Made On HK tooling & prints in the Enfield factory in Britain in 1988. Each bolt head is complete with the bolt head parts installed & 100% functional. Removed from...HKP-18423Now: $129.95Was: $179.95 -
HK UMP, USC Recoil Rod Assembly, Complete
H&K Heckler & Koch
$79.95HK USC/UMP 45/40/9mm Recoil Spring/Rod Assembly New HK German. This is great to have as a spare as this is a repair and replacement item. Compatible With: HK UMP 45 HK USC 45 HK UMP 40 HK UMP 9mmHKP-00610$79.95 -
HK MP5 Reverse Stretch Recoil Assembly - 9mm
$37.95Complete Recoil Rod Assembly For The MP5 Reverse Stretch New US made MP5 reverse stretch or MP5 Full size compact recoil rod assembly complete micro polished and built of the finest materials to make the finest US made recoil assembly available. All...HKP-16580$37.95 -
HK MP5, MP5K Bolt Carrier Stop Pin and Axle Set
H&K Heckler & Koch
$14.95MP5 & MP5K Stop Pin, Axle Set For Bolt Carrier Each set is designed to keep the locking piece clocked at the correct location and in place when the stop axle and pin set are installed in the carrier. This item can become damaged...HKP-02558$14.95 -
Out Of Stock
HK91, HK G3, PTR Bolt Head, Complete - LIKE NEW
H&K Heckler & Koch
$179.95German Bolt Head Complete - Used German "ID" Date Coded HK G3, HK91, and PTR Made on HK tooling and prints in Germany in 1983. Each used bolt head is complete with all parts installed and 100% functional. Taken from live demilled German HK G3...HKP-20227$179.95 -
HK UMP, USC Firing Pin Spring
H&K Heckler & Koch
$9.95H&K UMP/USC (.40 S&W/.45 ACP/9mm) Firing Pin Spring This is a common wear and breakage item. This item also frequently becomes lost by end users when field stripping the UMP and USC Bolts. Compatible with: All HK UMP & USC FirearmsHKP-00262$9.95 -
G36, SL8 Bolt Head Ejector Pin
H&K Heckler & Koch
$7.95Bolt Head Ejector Pin For G36 & SL8 This item is the pin that holds the ejector & ejector spring in place. It is a common wear and replacement item and a must-have when doing bolt head maintenance.HKP-01876$7.95 -
HK UMP, USC Extractor - .45 ACP
H&K Heckler & Koch
$49.95New USC & UMP .45 Extractor - German Compatible with both the USC & UMP. Perfect for spares as they are prone to breakage and are a common wear item. Please Note: HK considers this a high wear and replacement item. Once it is removed from the...HKP-00265$49.95 -
HK91, G3 Firing Pin Spring - Used
H&K Heckler & Koch
$4.95Heckler and Koch 91/G3 (7.62x51/.308) Firing Pin Spring - Used This is a common repair and replacement item. Grab one for a spare, just in case.HKP-16711$4.95 -
Out Of Stock
HK91, G3, PTR Training Bolt Group, Complete - Full Auto
H&K Heckler & Koch
$0.00Heckler and Koch F/A Complete Training Bolt Group for HK91, G3, and PTR Surplus HK German Plastic training ammo bolt group. To be used with the readily available and cheap plastic tipped training ammo only! A neat collectible item as only a small...HKP-18265$0.00 -
HK MP5F, MP5 40/10 Recoil Rod Assembly - Complete
H&K Heckler & Koch
$79.95German HK MP5F Recoil Assembly This is the factory-correct MP5F or MP5 40/10 Recoil Rod assembly. Most commonly used for MP5's that are using +P or +P+ ammunition or any high impulse 9mm. Or for all MP5 40 or 10-mm bolt groups. A great upgrade to have...HKP-00133$79.95 -
HK416, MR556, MR762 Extractor Spring Buffer
H&K Heckler & Koch
$14.95H&K HK MR556/MR762/416 Extractor Spring Buffer This buffer fits inside the extractor spring in the extractor pocked of the bolt. This item is a high wear item and a spare would be highly advised. Compatible With: HK MR556 HK 416 HK MR762HKP-00051$14.95