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
HK MP5, MP5K Bolt Carrier Stop Pin and Axle Set
H&K Heckler & Koch
Now: $13.95Was: $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-02558Now: $13.95Was: $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 -
On Sale
HK MP5 Reverse Stretch Recoil Assembly - 9mm
Now: $32.95Was: $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-16580Now: $32.95Was: $37.95 -
On Sale
HK UMP, USC Firing Pin Spring
H&K Heckler & Koch
Now: $8.95Was: $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-00262Now: $8.95Was: $9.95 -
On Sale
G36, SL8 Bolt Head Ejector Pin
H&K Heckler & Koch
Now: $6.95Was: $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-01876Now: $6.95Was: $7.95 -
On Sale
HK MP5, 90 Series Locking Plate for Rollers
USA
Now: $3.95Was: $8.95Special Weapons HK MP5, 90 Series Locking Plate for Rollers SOLD INDIVIDUALLY This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with use and age of the service weapon. Compatible With: MP5,...HKP-99399Now: $3.95Was: $8.95 -
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 -
On Sale
HK91, G3 Firing Pin Spring - Used
H&K Heckler & Koch
Now: $4.45Was: $4.95H&K 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-16711Now: $4.45Was: $4.95 -
On Sale
HK416, MR556 Bolt Head Cam Pin
H&K Heckler & Koch
Now: $28.95Was: $31.95Heckler and Koch HK416 and HK MR556 Bolt Head Cam Pin New factory HK German manufactured cam pin for bolt group. A common wear and replacement item. Compatible With: HK 416, MR556 HK 416 A5 HK M27HKP-02539Now: $28.95Was: $31.95 -
On Sale
HK UMP, USC Extractor - .45 ACP
H&K Heckler & Koch
Now: $44.95Was: $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-00265Now: $44.95Was: $49.95 -
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 -
On Sale
HK21E, HK11E Extractor Spring
H&K Heckler & Koch
Now: $22.95Was: $24.95HK21E & 11E Factory Extractor Spring Made by HK Germany for all HK21E's and 11E's.HKP-00815Now: $22.95Was: $24.95