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
HK MP5 40/10 Low Impulse Locking Piece #24 - US
RCM
Now: $40.46Was: $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...Now: $40.46Was: $44.95 -
On Sale
HK MP5K, AP5-P Recoil Rod Assembly
MKE
Now: $49.46Was: $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: $49.46Was: $64.95 -
On Sale
HK MP5, HK94 Recoil Guide Rod
H&K Heckler & Koch
Now: $13.46Was: $14.95New HK German MP5, 94 Recoil Guide Rod BarNow: $13.46Was: $14.95 -
Out Of StockOn Sale
Michaels Machines HK UMP .45 Semi-Auto Bolt Group - Complete
Michaels Machines
Now: $674.96Was: $749.95Michaels Machines HK UMP .45 Semi-Auto Bolt Group - Complete MM’s UMP Tungsten filled UMP .45 bolt carrier complete. Heat treated, parkarized and polished for the best look and function possible, as an added bonus it now includes German HK...Now: $674.96Was: $749.95 -
On Sale
HK417, MR762 Bolt Group - Complete - DMR
H&K Heckler & Koch
Now: $809.96Was: $899.95H&K HK MR762 Bolt Group Complete DMRNow: $809.96Was: $899.95 -
Out Of StockOn Sale
HK UMP45 Bolt Group
Now: $332.95Was: $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 ParkerizedNow: $332.95Was: $369.95 -
On Sale
HK MP5K/SP89 9mm Full Auto Carrier
H&K Heckler & Koch
Now: $1,754.96Was: $1,949.95HK German MP5K Full Auto Bolt Carrier - Latest Style Contour Each bolt carrier is designed to fit all HK MP5K's, SP89, and K-style clones seamlessly. Crafted from the latest tungsten-filled HK German production, these are the final units available,...Now: $1,754.96Was: $1,949.95 -
HK MP5F Bolt Carrier - Full Auto - 9mm
H&K Heckler & Koch
$1,949.95H&K MP5F 9mm Full Auto Bolt Carrier This carrier is the latest and greatest MP5 carrier. Will fit all HK MP5 and HK94's or clones semi or full. These are becoming increasingly hard to find. Get them while you can. This is the newer style that has...$1,949.95 -
On Sale
HK MP5 Recoil Spring
MKE
Now: $6.34Was: $10.99MKE HK MP5 Recoil Spring Great replacement and spare recoil spring as this is a common repair and replacement item. Compatible With: HK MP5 Century Arms AP5 Clones & custom buildsNow: $6.34Was: $10.99 -
On Sale
HK417, MR762 Bolt Carrier
H&K Heckler & Koch
Now: $467.96Was: $519.95H&K HK MR762 Bolt Carrier New HK German production. Compatible With: HK MR762A1, A4 HK 417Now: $467.96Was: $519.95 -
On Sale
HK UMP Caliber Conversion to 9mm Kit - 7.87" Barrel - 30 Round Magazine
Michaels Machines
Now: $1,164.56Was: $1,293.95MM HK UMP, USC Conversion Kit - 9mm This 9mm conversion kit is designed for USC-to-UMP builds and allows existing .45 ACP conversions to be changed over to 9mm with a simple, drop-in parts swap. All components install in minutes and are built to...Now: $1,164.56Was: $1,293.95 -
On Sale
HK23E Recoil Spring - 5.56/.223
H&K Heckler & Koch
Now: $71.95Was: $79.95New German HK Factory HK23E Recoil SpringNow: $71.95Was: $79.95