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
HK416, MR556, MR762 Forward Assist Pin
H&K Heckler & Koch
Now: $4.46Was: $4.95H&K HK MR556/MR762/416 Forward Assist Pin Compatible With: HK MR556 HK 416 HK MR762Now: $4.46Was: $4.95 -
On Sale
HK91, G3 Bolt Carrier - Full Auto - Surplus
H&K Heckler & Koch
Now: $134.95Was: $149.95HK G3 Factory Full Auto Bolt Carrier - German German HK 70'- 80's production used surplus bolt carrier with locking lever, spring, and axle pin installed. Most are NOT date-coded on the top of the carrier. Most will be marked on the side or, more...Now: $134.95Was: $149.95 -
HK -6 Roller For Bolt Head 7.94mm - Under-sized
H&K Heckler & Koch
$27.95H&K -6 Roller For Bolt Head 7.94mm - Under-sized New HK German -6 roller that measures 7.94mm. For use with all HK 90 series firearms. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way...$27.95 -
On Sale
HK MR556 A1, A4 Bolt Group - Complete
H&K Heckler & Koch
Now: $476.96Was: $529.95H&K HK MR556A1 and A4 Complete Bolt Group Complete semi-auto bolt carrier group for MR556A1/A4 receivers. Bolt carriers will be marked ".223 Rem" or "5.56 x 45". Includes The Following: MR556 Bolt Carrier Complete bolt head Firing pin...Now: $476.96Was: $529.95 -
On Sale
HK416, MR556, MR762 Bolt Catch Plunger
H&K Heckler & Koch
Now: $8.96Was: $9.95HK MR556 & HK 416 Bolt Catch Plunger Compatible With: HK MR556 HK 416 HK MR762Now: $8.96Was: $9.95 -
On Sale
HK91, G3 Complete F/A Bolt Group - Used
H&K Heckler & Koch
Now: $233.95Was: $259.95HK Factory German G3, 91, PTR F/A Bolt Group - Complete Used Everything you need as a spare or a direct replacement of your existing bolt group. This bolt group is a direct replacement of all HK G3, HK91, SAR3/8, PTR-91, C91, Clones, Etc. Bolt...Now: $233.95Was: $259.95 -
HK MP5 Semi Auto Carrier
RCM
$146.95RCM HK MP5 Semi Auto Carrier New RCM manufactured MP5, 94 F/A carrier with all current "F" style upgrades and tungsten filled for the best performance and the utmost reliability. Machined completely from billet ordnance grade steel to exact HK German...$146.95 -
On Sale
HK53 Locking Piece #3 - 58 Degree
RCM
Now: $44.99Was: $49.99RCM HK 53 Locking Piece #3 - 58 Degree This is the proper locking piece for the HK33K and HK53 firearms as well as some HK51 builds.Now: $44.99Was: $49.99 -
On Sale
HK UMP, USC Firing Pin - Complete Assembly - .40 S&W / .45 ACP / 9mm
H&K Heckler & Koch
Now: $74.66Was: $82.95HK German USC & UMP Firing Pin Assembly Complete A great spare to have on hand as this item is a hard-to-find replacement part. Compatible With: USC 45 UMP 45 UMP 40 UMP 9mm ALL USC Conversions ALL UMP MG'sNow: $74.66Was: $82.95 -
On Sale
HK416, HK417, MR556, MR762 Bolt Catch Spring
H&K Heckler & Koch
Now: $6.25Was: $6.95H&K HK MR556/762/416/417 Bolt Catch Spring Compatible With: HK MR556 HK 416 HK MR762 HK 417Now: $6.25Was: $6.95 -
On Sale
HK MP5, MP5K Bolt Head - Complete - F-Style
H&K Heckler & Koch
Now: $449.95Was: $499.95MP5 & HKSP5, MP5K & SP5K F Bolt Head Complete - HK German This part will fit all HK 9mm rifles and MP5 pistols. This is the latest HK production and generation of bolt heads available. These are rare and HK now considers them restricted...Now: $449.95Was: $499.95 -
On Sale
HK53 Bolt Carrier - Full Auto - US
RCM
Now: $323.95Was: $359.95Bolt Carrier - US - RCM - HK53 Brand new US manufactured new style HK53 factory bolt carrier. The finest HK53 carrier ever made with the latest & greatest German inspired improvements and updates. Ideal for 556/.223 & .300 BLK firearms...Now: $323.95Was: $359.95