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 Ejector For Bolt Head
H&K Heckler & Koch
Now: $21.55Was: $23.95H&K HK MR556/416 Ejector For Bolt Head HK German factory part. Compatible With: HK MR556 HK 416Now: $21.55Was: $23.95 -
On Sale
HK91, G3 Complete Tungsten Full Auto Bolt Group
HKP HK Parts
Now: $439.96Was: $549.95HKP HK 91/G3 (7.62x51/.308) Complete Tungsten Full Auto Bolt Group US Made HK 91/G3 Full Auto Bolt Group Complete - NEW Each bolt group is built using HK factory prints, specs here in the US. As an added bonus each bolt group counts as two US parts for...Now: $439.96Was: $549.95 -
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
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 -
On Sale
HK416, MR556 Catch- Firing Pin
H&K Heckler & Koch
Now: $17.95Was: $19.95HK MR556/416 Firing Pin Catch Compatible With: HK MR556 HK 416Now: $17.95Was: $19.95 -
On Sale
HK91, G3 Tungsten Full Auto Carrier - Made by EBO Under HK Contract
EBO
Now: $179.95Was: $199.95Used HK Contract Greek (EBO) F/A Date Coded Tungsten Filled Bolt Carrier. HK German G3 F/A date coded bolt carrier with the tungsten inserts. The tungsten inserts and upgrade is ideal for those that are having bolt bounce issues or want the smoothest...Now: $179.95Was: $199.95 -
On Sale
HK MP5 40/10 High Impulse Locking Piece #25 US
RCM
Now: $40.46Was: $44.95MP5 40 & MP5 10mm High Impulse Locking Piece Marked #25 Made in the US from an enhanced material and heat treated to factory specifications. Each US-made MP5 40/10 60-Degree Locking Piece is used for high-impulse ammo commonly found in...Now: $40.46Was: $44.95 -
On Sale
HK33, HK33K, HK93 Bolt Carrier - Full Auto - US
RCM
Now: $323.95Was: $359.95HK 93, 33 & 33K Full Auto Bolt Carrier - US - RCM Brand new US RCM manufactured new style HK33/93, 33K factory bolt carrier. The finest HK bolt carrier ever made with the latest & greatest German inspired improvements and updates. Ideal for...Now: $323.95Was: $359.95 -
On Sale
HK UMP Firing Pin Retainer Pin - .40 S&W / .45 ACP / 9mm
H&K Heckler & Koch
Now: $7.16Was: $7.95HK UMP Firing Pin - Retainter Pin This is the pin that trips the trip lever on the UMP lower. Compatible With: HK UMPNow: $7.16Was: $7.95 -
On Sale
HKP HK MP5 (.40 S&W) Locking Roller +2
HKP HK Parts
Now: $9.56Was: $11.95HK US MP5 .40 S&W Locking Roller, +2 The proper roller size is essential for proper headspacing of bolt gap. +2 / 8.02mm 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...Now: $9.56Was: $11.95 -
On Sale
HK MP5 Weldment Set - 10mm / .40 S&W
HKP HK Parts
Now: $151.96Was: $189.95HKP MP5 40/10 Bolt Hold Open Weldment Set Complete Not offered or available anywhere else. This is the correct weldment set for the MP5 40/10 BHO components.Now: $151.96Was: $189.95 -
On Sale
HK33, HK93 Bolt Carrier Group - Full Auto - Used
H&K Heckler & Koch
Now: $539.96Was: $599.95H&K 33& 93 Full Auto Carrier Bolt Group - Used HK German manufactured for HK contract 33, 93 full auto bolt group, early style carrier with a half moon buffer. Used, but in good shape overall. Each Bolt Group Includes: HK33/93 F/A Carrier...Now: $539.96Was: $599.95