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 Stock
HK UMP Conversion Kit - 9mm - Threaded 1/2x28
HKP HK Parts
$679.95HKP HK UMP 9mm Conversion Kit -Threaded 1/2x28 9mm UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those that have already done the USC-UMP conversion. The conversion parts are drop in with...$679.95 -
Out Of Stock
HK23E Extractor Spring
H&K Heckler & Koch
$0.00HK23E Factory German Extractor Spring Rare and hard to find. This is a new HK German part.$0.00 -
Out Of Stock
HK21E, HK23E Extractor Cylindrical Pin
H&K Heckler & Koch
$0.00HK 21E, HK 23E Extractor Cylindrical Pin This part holds the extractor in place on the bolt head. A great spare to have on hand.$0.00 -
Out Of Stock
HK21, HK23E, PSG1, MSG90 Firing Pin Spring
H&K Heckler & Koch
$0.00HK German HK21E, HK23E Firing Pin Spring A must-have spare and replacement part. No longer in production. Compatible With: HK21E HK23E HK11E HK13 E HK21 HK MSG90 HK PSG1$0.00 -
Out Of Stock
HK11E Bolt Group - Complete
H&K Heckler & Koch
$0.00HK11E Bolt Group Complete This is the complete bolt group for an HK German HK11E. Now out of production and rare. Includes the following: HK11E bolt carrier complete HK11E bolt head complete HK11E firing pin HK11E firing pin spring HK11E locking piece...$0.00 -
Out Of Stock
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Out Of Stock
HK11E Bolt Carrier
H&K Heckler & Koch
$899.95HK 11E bolt carrier HK21E to HK11E bolt carrier used to convert an HK21E to an HK11E to accept HK91/G3 style magazines. This is the HK11E bolt carrier only. Includes: HK 11E Bolt Carrier Last units no longer made- these were the LAST units HK Germany...$899.95 -
Out Of Stock
HK PSG1, MSG90 Locking Rollers - Set of 12 - Factory Complete
H&K Heckler & Koch
$0.00HK PSG1 Factory Locking Roller Set Complete RARE! (Every Size) That HK Made For The MSG90 / HKPSG1/ & HK23E AS Follows - 6, - 4, - 2, Standard 8mm, +2, +4 (Pair Of Each Size) PSG1 / 23E Half Moon Roller Set Complete (Total Of 12 Rollers) More...$0.00 -
Out Of Stock
HK PSG1, MSG90 Locking Piece 45 degree - 30T
H&K Heckler & Koch
$0.00H&K PSG1/MSG90 (7.62x51/.308) 30T - 45 degree Locking Piece HK German PSG-1/MSG90 30T Locking Piece. This is 45 Degree & Made of Titanium For the PSG or MSG Rifles. This is similar to the 23T locking piece only this has a 5 degree locking...$0.00 -
HK MSG90 Locking Roller - 8.00mm - Titanium
H&K Heckler & Koch
$284.95HK German MSG-90 Titanium 8.00mm Set (one of two rollers) Half Moon Rollers Half moon rollers. 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 need to order -...$284.95 -
HK MSG90 Locking Roller -2 - 7.98mm - Titanium
H&K Heckler & Koch
$284.95HK German MSG-90 Titanium -2 or 7.98mm Half moon rollers. 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 need to order - plus-size rollers increase the bolt gap...$284.95 -
HK MSG90 Locking Roller +4 - 8.04mm - Titanium
H&K Heckler & Koch
$329.95MSG90 (7.62x51/.308) +4 Rollers 8.04mm Set -Titanium Half moon rollers. 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 need to order - plus-size rollers...$329.95