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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Out Of StockOn Sale
HK33, HK53, HK93 Firing Pin - Stainless Steel
HKP HK Parts
Now: $19.96Was: $24.95HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel Specifications: Made in the USA Made from stainless steel Compatible With: HK 93/53/33Now: $19.96Was: $24.95 -
Out Of StockOn Sale
HK MP5, HK94K, SP89 Firing Pin
POF
Now: $22.45Was: $24.95HK Contract MP5, HK94 Firing Pin - POF Made from HK prints and tooling in the POF factory. The USA and German HK offering are a better offering with tighter tolerances and better materials. Compatible With: MP5 HK94 MP5K SP89 SP5K All 9mm, 40/10mm...Now: $22.45Was: $24.95 -
On Sale
HK416, MR556 Extractor Spring Buffer
HKP HK Parts
Now: $4.31Was: $5.39HKP HK MR556/416 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 & HK416 FirearmsNow: $4.31Was: $5.39 -
On Sale
HK G36, SL8 Extractor
USA
Now: $39.95Was: $67.95G36 & HK SL8 Extractor For Bolt Head Compatible With: All G36 variants SL8-1, SL8-6Now: $39.95Was: $67.95 -
On Sale
HK G36, MP7 Bolt O-Ring - Firing Pin - US
USA
Now: $5.36Was: $5.95HK G36 & MP7 Firing Pin Bolt O-ring. This is also the O-ring for the retaining pin for the MP7- US. Compatible With: HK G36 HK MP7Now: $5.36Was: $5.95 -
On Sale
HK MP5 40/10 Extractor
H&K Heckler & Koch
Now: $62.96Was: $69.95New HK MP5 40/10/.357 Latest Production 1.4mm Extractor This is the latest and greatest upgraded extractor made by HK. This is also a great upgrade for the many out-of-spec clones out there. Compatible With: MP5 40 MP5 10 MP5 .357Now: $62.96Was: $69.95 -
On Sale
HK Burst Roller Type Trip Lever - Latest Style
H&K Heckler & Koch
Now: $89.95Was: $99.95H&K Burst Roller Type Trip Lever - Latest Style Compatible With: 0,1,3,F 0,1,2,F 0,1,3 0,1,2Now: $89.95Was: $99.95 -
On Sale
HK UMP/USC (.45 ACP) Extractor
Now: $35.96Was: $39.95HK UMP & USC .45 Extractor 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 removed from the carrier, the spring tension is compromised,...Now: $35.96Was: $39.95 -
On Sale
HK MP5, MP5K, AP5 Replacement Kit - Firing Pin and Spring
MKE
Now: $16.95Was: $19.95MKE HK MP5, MP5K, AP5 Steel Firing Pin and Spring Replacement Kit Replacement steel firing pin and spring kit for HK MP5 platforms. Direct-fit parts for repairing or replacing worn firing components in MP5-style bolt assemblies. Includes: Firing...Now: $16.95Was: $19.95 -
On Sale
HKP HK MP5 40 Locking Roller +4
HKP HK Parts
Now: $9.56Was: $11.95HK US MP540 Undersized Locking Roller, +4 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need...Now: $9.56Was: $11.95 -
On Sale
HK G36, SL8 Bolt Head Ejector Pin
Now: $6.25Was: $6.95HK G36/SL8 (5.56/.223) Bolt Head Ejector Pin HK Ejector roll pin for G36, SL8 bolt heads. This item is the pin that holds the ejector & ejector spring in place. A common wear & replacement item and a must have when doing bolt head maintenance...Now: $6.25Was: $6.95 -
On Sale
HK MP5 Bolt Group - Complete - .40 S&W, 10mm
HKP HK Parts
Now: $331.96Was: $414.95RCM- MP5 40 & MP5 10mm - Bolt Group Complete Ideal to replace out of spec, worn, or broken bolt groups or for that custom build. Includes: RCM bolt head complete RCM locking piece RCM firing pin RCM firing pin spring RCM full auto bolt carrier...Now: $331.96Was: $414.95