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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HK UMP, USC Bolt Catch Spring
H&K Heckler & Koch
$8.95HK UMP & USC Bolt Catch Spring Compatible With: HK UMP HK USC$8.95 -
HK21E, HK23E, 11E Locking Piece #9 - 40 Degree
H&K Heckler & Koch
$149.95New HK German #9 Locking Piece The number 9 locking piece is 40 degrees. This will work with both .223 & .308 firearms and for custom builds and applications. This item is no longer available from HK and is out of production. Compatible With:...$149.95 -
HK MP5, HK94 Complete Bolt Head - Used
H&K Heckler & Koch
$349.95 - $369.95H&K MP5 & HK94 Complete Bolt Head - Used Last call! These original HK German MP5 & HK94 bolt heads are now classified as restricted import items by HK making stock extremely limited. Date Code: IA - 1980 IB - 1981 IC - 1982 ID - 1983 IE -...$349.95 - $369.95 -
HK MP5, AP5 Firing Pin
MKE
$14.95MKE HK MP5/AP5 Firing Pin - 9mm MKE firing pin for HK MP5 platforms. Compatible With: HK MP5/SP5 Century Arms AP5/AP5P Zenith ZF-5/ZF-5K PTR 9CT/9KT$14.95 -
$12.95 -
HKP HK MP5 (.40 S&W) Locking Roller -6
HKP HK Parts
$11.95HK US MP540 Undersized Locking Roller, -6 The proper roller size is essential for headspacing the bolt gap correctly. 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...$11.95 -
Out Of Stock
HK416, MR556 Firing Pin - Silver
GSG9
$34.95Firing Pin for HK 416 & MR556 Firearm - USA - GSG9 US made HK 416 & MR556 Made from hardened stainless steel. Compatible With: HK416 HK MR556 HK CR556 HK M27$34.95 -
HK G36/SL8 Complete Recoil Rod Assembly
USA
$39.95Recoil Rod Assembly For All - HK G36 & SL8 New G36/SL8 recoil rod assembly complete. Great for replacement or for a spare as these have been hard to find. Made in the USA. Compatible With: G36 SL8$39.95 -
HK MP5 40/10 High Impulse Locking Piece #25
H&K Heckler & Koch
$229.95New HK German MP5 40 or MP5 10mm High Impulse Locking Piece Marked #25 This is the 60-degree locking piece that is used for high-impulse ammo, commonly found in +P or +P+ ammo. This locking piece is needed to cycle these hot loads without excessive...$229.95 -
HK91, G3 Extractor - Enhanced Coated Polish
HKP HK Parts
$24.95HKP HK 91/G3 Extractor - Enhanced Coated Polish Built for dependable performance, this polished and coated extractor delivers smooth cycling and consistent extraction. A great choice for both upgrades and routine replacements. Compatible With: HK...$24.95 -
On Sale
HK MP5, HK94, SP5K 100 Degree Locking Piece - Gunsmith Special - BLEMISHED
HKP HK Parts
Now: $7.46Was: $33.95HKP MP5, HK94 & MP5K 100 Degree Locking Piece - Gunsmith Special - BLEMISHED GUNSMITH SPECIAL. THESE UNITS WILL NEED RE-WORK BEFORE USE. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Please Note: Will...Now: $7.46Was: $33.95 -
Out Of Stock
HK416, MR556 Ejector Spring
H&K Heckler & Koch
$39.99HK 416 & MR556 Ejector Spring Compatible With: MR556 HK 416$39.99