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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Out Of StockOn Sale
HK23E Bolt Carrier
H&K Heckler & Koch
Now: $719.96Was: $799.95New HK German 23E .223 / 5.56 Bolt Carrier Date coded and marked HK23-E. These are the last HK23E carriers that HK Germany has left. We are told that once these are gone, there will be no more. They are a great spare part to have, and they are getting...Now: $719.96Was: $799.95 -
On Sale
HK MP5 Rod - Recoil - Complete Assembly
H&K Heckler & Koch
Now: $71.95Was: $79.95German HK MP5F Recoil Assembly This is the factory-correct MP5F or MP5 40/10 Recoil Rod assembly. Most commonly used for MP5's that are using +P or +P+ ammunition or any high impulse 9mm. Or for all MP5 40 or 10-mm bolt groups. A great upgrade to have...Now: $71.95Was: $79.95 -
On Sale
HK G36, SL8 Extractor
H&K Heckler & Koch
Now: $71.95Was: $79.95G36 & HK SL8 German Extractor For Bolt Head New HK German. This is a great item to keep as a spare. Compatible With: All G36 Variants SL8-1, SL8-6Now: $71.95Was: $79.95 -
On Sale
HK33, HK53, HK93 Pin - Firing
H&K Heckler & Koch
Now: $71.95Was: $79.95H&K 93, 53, & 33 (5.56/.223) Firing Pin This is the factory-correct HK German firing pin and is a great replacement part. This is also a great upgrade for your HK 223.556 clones. This part is no longer available from HK as this part is out of...Now: $71.95Was: $79.95 -
On Sale
HK G36, SL8 Firing Pin - All Variants
H&K Heckler & Koch
Now: $53.96Was: $59.95HK German G36/SL8 Firing Pin This is a great spare to have on hand. The firing pin fits all G36, G36K, G36C & SL8 variants. Compatible With: HK G36/G36K/G36C HK SL8Now: $53.96Was: $59.95 -
On Sale
HK416, MR556 Extractor Axle Pin
H&K Heckler & Koch
Now: $10.75Was: $11.95HK MR556 & 416 Extractor Axle Pin This factory HK German part holds the extractor in place on the bolt head. This item needs to be changed each time it is removed per HK. Compatible With: HK MR556 HK 416 M27 HK 416 A5Now: $10.75Was: $11.95 -
On Sale
HK G36/SL8 (5.56/.223) Ejector Spring
USA
Now: $17.95Was: $19.95HK G36 & SL8 Series Of Ejector Spring. Great item to have on hand as this is prone to wear and breakage- US.Now: $17.95Was: $19.95 -
On Sale
HK UMP Extractor - 9mm
H&K Heckler & Koch
Now: $54.86Was: $60.95New HK German USC/UMP 9mm Extractor This is the perfect spare part to have for your UMP or USC 9mm conversion. Hard to find and only available here at HKPARTS.Now: $54.86Was: $60.95 -
HK G36, G36K, G36C Bolt Head - Complete - Rare
H&K Heckler & Koch
$599.95Heckler and Koch HK G36, G36K, G36C Complete Bolt Head Rare new German HK bolt head for the G36, G36K, and G36C. This is the correct factory bolt head needed when converting the SL8 to use double-stack G36 magazines. The assembly comes complete with all...$599.95 -
On Sale
HK UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin
H&K Heckler & Koch
Now: $5.36Was: $5.95H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch PinNow: $5.36Was: $5.95 -
On Sale
HK MP5K Semi Auto Carrier
RCM
Now: $132.25Was: $146.95RCM HK MP5K Semi Auto Carrier MP5K, SP89 semi-auto carrier machined completely from billet ordnance steel. RCM's US made MP5K carrier is made to the most updated and latest MP5K specs and more. Tungsten filled, heat treated, phosphate finish and...Now: $132.25Was: $146.95 -
On Sale
HK G36 Bolt Head - Incomplete
GSG9
Now: $203.35Was: $225.95G36 Incomplete Bolt Head - USA G36 bolt head allows the use of double stack magazines in your SL8 conversion to high-capacity G36, Magpul, or AR15 magazines.Now: $203.35Was: $225.95