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 Ejection Door Lock Roll Pin
H&K Heckler & Koch
Now: $4.46Was: $4.95HK MR556 & HK416 Ejection Door Lock Bolt/Roll Pin Compatible With: HK416 A1, A3, A5 HK MR556 A1, A4Now: $4.46Was: $4.95 -
On Sale
HK MP5F & MP5 40,10 Recoil Rod Guide Ring For Recoil Rod Assemblies - Enhanced
HKP HK Parts
Now: $3.16Was: $3.95HKP MP5F & MP5 40,10 Recoil Rod Guide Ring For Recoil Rod Assemblies - Enhanced New Enhanced material for greater longevity and durability Our US made recoil rod guides are the made from the strongest most durable material available much better than...Now: $3.16Was: $3.95 -
On Sale
HK416, MR556, MR762 Bolt Catch Pin
H&K Heckler & Koch
Now: $4.46Was: $4.95H&K HK MR556/MR762/416 Bolt Catch Pin The factory roll pin is used to hold the bolt catch in place. Great to have on hand in the event this item becomes lost or damaged when doing maintenance Compatible With: HK MR556 HK 416 HK MR762Now: $4.46Was: $4.95 -
On Sale
HK MP5 Trigger Pack - 9mm - Complete - Full Auto - Hammer XX - Roller Sear
H&K Heckler & Koch
Now: $449.95Was: $499.95H&K MP5/K 9mm Full Auto Complete Trigger Pack This factory HK German MP5 9mm full auto trigger pack is offered as it was originally configured by HK Germany. It has been carefully preserved from a demilled 1980s production MP5 and comes complete with...Now: $449.95Was: $499.95 -
On Sale
HK MP5, HK94 Bolt Group - 9mm - Full Auto
RCM
Now: $413.95Was: $459.95RCM HK MP5-E Full Auto Bolt Group Each bolt group incorporates RCM’s F style carrier, MP5-E bolt head, extractor and 100 degree locking piece. This group is 100% US made and the finest out there. Complete and ready to drop in and use. Ideal to...Now: $413.95Was: $459.95 -
On Sale
HK53 Locking Piece #15 - 65 Degree
RCM
Now: $44.96Was: $49.95RCM HK 53 Locking Piece #15 - 65 Degree The #15 LP is the correct locking piece for the HK53 and several other custom-build applications. The locking piece is the timing mechanism that a delayed roller lock firearm uses to tell...Now: $44.96Was: $49.95 -
On Sale
HK MP5, MP5K, HK94K, SP89 Bolt Head - 9mm
RCM
Now: $199.75Was: $221.95HK MP5, 94, MP5K, & SP89 9mm - Complete Bolt Head Each bolt head incorporates a mixture of the finest quality US-made and factory German HK parts, making a new complete bolt head ready for use. Use this to replace out-of-spec bolt heads and worn-out...Now: $199.75Was: $221.95 -
On Sale
HK21E, HK23E Locking Piece #9 - 40 Degree
RCM
Now: $44.96Was: $49.95Locking Piece #9 - 40 Degree - US Made Compatible With: HK 21e HK 23eNow: $44.96Was: $49.95 -
HK MP5SD Bolt Group - Complete - 9mm
RCM
$409.95Complete Bolt Group - RCM - HK MP5SD 9mm Ideal to replace out of spec, worn or broken bolt groups or for that custom build. Each bolt group will work and fit on semi or full auto MP5SD 9mm style firearms. This is the finest US BCG available...$409.95 -
On Sale
HK MP5K, SP89 9mm Locking Piece - 110 Degree
RCM
Now: $30.56Was: $33.95MP5K, SP89 Locking Piece - 110 Degree - RCM US-Made Locking Piece. Made from ordnance grade steel, heat treated, and made to last by RCM. HK no longer makes the 110-degree locking piece as they use the 100-degree locking piece in all 9mm MP5 and MP5K...Now: $30.56Was: $33.95 -
On Sale
HK416, MR556 Firing Pin
H&K Heckler & Koch
Now: $49.46Was: $54.95H&K HK MR556/416 Firing Pin New HK German manufactured. This is a great item to have on hand as the firing pin is one of the most abused components in the HK MR556 and HK 416 weapon systems. Compatible With: HK MR556 HK 416 HK CR556 HK...Now: $49.46Was: $54.95 -
On Sale
HK416 Retaining Pin - Firing Pin - Enhanced
H&K Heckler & Koch
Now: $17.95Was: $19.95HK 416 Firing Pin Retaining Pin- New Style This part is the newer style pin that is goldish, super hardened, and much less prone to wear and tear. The enhanced version is the most robust, easiest-to-use pin available. Compatible With: HK 416 AR15, M4...Now: $17.95Was: $19.95