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 Spring Lock Bolt
H&K Heckler & Koch
Now: $8.99Was: $9.99H&K HK MR556/MR762/416 Spring Lock Bolt Compatible With: HK MR556 HK 416 HK MR762 HK 417Now: $8.99Was: $9.99 -
On Sale
HK 23E/13E/G43 (7.62x51/.308) & (5.56/.223) Extractor
H&K Heckler & Koch
Now: $107.95Was: $119.95HK23E & HK13E Extractor New HK German and no longer in production. Compatible With: MM 23E HK 13ENow: $107.95Was: $119.95 -
Out Of StockOn Sale
HK53 Complete Recoil Assembly
H&K Heckler & Koch
Now: $134.95Was: $149.95HK German HK53 Recoil Assembly Complete Brand new HK German manufactured. Each unit will fit factory HK53 firearms or clones that are built to factory specs. Compatible With: HK 53 HK clones such as V53 & C53 firearmsNow: $134.95Was: $149.95 -
On Sale
HK MP5 40/10 -2 Roller
H&K Heckler & Koch
Now: $17.95Was: $19.95HK German MP5 40/10 -2 roller Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for...Now: $17.95Was: $19.95 -
On Sale
HK MP5 40, 10 Roller - +4
H&K Heckler & Koch
Now: $18.86Was: $20.95New HK German MP5 40/10 +4 roller Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair) for a complete set...Now: $18.86Was: $20.95 -
On Sale
HK416, MR556 SS Firing Pin
HKP HK Parts
Now: $23.96Was: $29.95Firing Pin For HK 416 & MR556 Firearm - USA Made from hardened stainless steel and comes new in the white. Compatible With: HK416 HK MR556 HK CR556 HK M27Now: $23.96Was: $29.95 -
On Sale
HK UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch
H&K Heckler & Koch
Now: $33.26Was: $36.95HK UMP & USC Bolt Catch New HK German lower. Compatible With: HK UMP HK USCNow: $33.26Was: $36.95 -
Out Of StockOn Sale
HK MP5 Axle Roll Pin - Bolt Hold Open - 10mm / .40 S&W
H&K Heckler & Koch
Now: $8.05Was: $8.95H&K MP5 40/10 Bolt Hold Open Axle Roll PinNow: $8.05Was: $8.95 -
On Sale
HK MP5, MP5K 40/10 Locking Piece - Extra Low Impulse - Gunsmith Special - BLEMISHED
HKP HK Parts
Now: $7.46Was: $49.95HKP MP5/K 40/10 Locking Piece - Extra Low Impulse - Gunsmith Special - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Please Note: Will require work...Now: $7.46Was: $49.95 -
On Sale
HK91, PTR-91 Bolt Head Complete
HKP HK Parts
Now: $143.96Was: $179.95HKP PTR HK91 / PTR-91 Bolt Head Complete New PTR bolt head complete with extractor, extractor spring, roller retainer plate, pair of 8mm rollers. Ready to drop in to replace your worn out bolt head. Bolt head counts as 1 US made compliance part for the...Now: $143.96Was: $179.95 -
On Sale
HK MR762 Firing Pin
HKP HK Parts
Now: $23.96Was: $29.95H&K HK MR762 Firing Pin US made steel firing pin for MR762 platforms. Compatible With: HK MR762Now: $23.96Was: $29.95 -
On Sale
HK MP5 40/10 Standard 8mm Roller
H&K Heckler & Koch
Now: $18.86Was: $20.95HK German MP5 40/10 8mm Roller - Factory New Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair) for a...Now: $18.86Was: $20.95