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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HK417, MR762 Retaining Pin - Firing Pin
H&K Heckler & Koch
$19.95Heckler and Koch MR762 Firing Pin Retaining Pin This firing pin retaining pin is made from a durable, black finished, steel and is a factory original Heckler and Koch component. This retaining pin is made for the HK417 and HK MR762 model of rifles. This...$19.95 -
Out Of Stock
HK MP5 Axle Roll Pin - Bolt Hold Open - 10mm / .40 S&W
H&K Heckler & Koch
$8.95H&K MP5 40/10 Bolt Hold Open Axle Roll Pin$8.95 -
HK91, PTR-91 Bolt Head Complete
HKP HK Parts
$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...$179.95 -
HK MR762 Firing Pin
HKP HK Parts
$29.95H&K HK MR762 Firing Pin Specifications: Made in the USA Compatible With: HK MR762$29.95 -
HK416, MR556 SS Firing Pin
HKP HK Parts
$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 M27$29.95 -
HK UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch
H&K Heckler & Koch
$36.95HK UMP & USC Bolt Catch New HK German lower. Compatible With: HK UMP HK USC$36.95 -
HK MP5 40/10 Standard 8mm Roller
H&K Heckler & Koch
$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...$20.95 -
HK MP5 40/10 Low Impulse Locking Piece #24 - US
RCM
$44.95RCM MP5 40/10 Low Impulse Locking Piece #24 Made out of enhanced material and heat treated to spec. The # 24 is the 90-degree locking piece. This is also the standard non-high impulse ammo locking piece. Compatible With: MP5...$44.95 -
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 -
$14.95 -
On Sale
HK MP5K, AP5-P Recoil Rod Assembly
MKE
Now: $54.95Was: $64.95MKE HK AP5P/MP5K Recoil Rod Assembly The recoil spring assembly is a great item to have on hand for replacement and spares as this is a consumable wearable part. Compatible With: HK SP5K/MP5K/SP89 Century Arms AP5-P/AP5-M Clones and other HK...Now: $54.95Was: $64.95 -
Out Of Stock
HK UMP45 Bolt Group
$369.95HK UMP .45 Tungsten Filled Semi Auto Bolt Group Complete. The semi auto bolt group is required for HK USC to HK UMP caliber conversions. Comes complete less the recoil assembly. Specifications: Tungsten filled Heat treated Parkerized$369.95