Bolt Carrier Groups
Discover top-quality H&K bolt carrier groups at HKParts, including the HK MP5 bolt carrier, 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
H&K PSG1/MSG90 (7.62x51/.308) Complete Factory Locking Roller Set - (12 rollers)
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...HKP-00822$0.00 -
Out Of Stock
H&K Roller Sear For Burst Trigger Packs
H&K Heckler & Koch
$0.00New HK German Roller Sear for SEF & Navy trigger packs. This is the newer style "roller" type not the older friction type of sear. This item is also referred to as the catch with roller but more commonly called a sear.HKP-01711$0.00 -
Out Of Stock
H&K UMP (.45 ACP) Bolt Group - Used
H&K Heckler & Koch
$0.00German HK UMP .45 Factory Full Auto Bolt Group Complete Used.Used German bolt carrier complete that is tungsten filled and the factory correct HK UMP .45 cal bolt group. Comes less the recoil assembly.HKP-01231$0.00 -
$24.95 -
HK G41 Firing Pin Spring
H&K Heckler & Koch
$9.95HK G41 Firing Pin Spring Compatible With: HK G41HKP-16060$9.95 -
On Sale
HK MP5 Bolt Carrier - Builder's Special
USA
Now: $39.95Was: $64.95HK MP5 Bolt Carrier - Builder's Special This aftermarket HK MP5 bolt carrier will require welding and coating prior to installation. Compatible With: HK MP5 THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINAL.HKP-99048Now: $39.95Was: $64.95 -
On Sale
HK MP5K Carrier Weldment Tube
USA
Now: $29.95Was: $44.95HK MP5K Carrier Weldment Tube The MP5K carrier weldment tube houses and supports the carrier assembly in the HK MP5K firearm. Each tube ships raw/unfinished and is ready to weld into your build. Compatible With: HK MP5K THIS CLOSEOUT PART IS NOT...HKP-99062Now: $29.95Was: $44.95 -
Out Of Stock
HKP HK 91/G3 (7.62x51/.308) Firing Pin - Titanium
HKP HK Parts
$29.95HK G3, 91 & PTR Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK G3, 91 & PTR weapon system. Get the...HKP-17937$29.95 -
On Sale
HKP HK MR556/416 Extractor - BLEMISHED
HKP HK Parts
Now: $29.95Was: $39.95HKP HK MR556/416 Extractor - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The HKP HK MR556/416 extractor is a precision-engineered component designed...HKP-21826-BNow: $29.95Was: $39.95 -
Out Of Stock
HKP HK MR556/416 Titanium Firing Pin Catch
HKP HK Parts
$49.95HK MR556 & HK416 Firing Pin - TitaniumGrade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK MR556 & HK 416 weapon system. Get the...HKP-17767$49.95 -
Out Of Stock
HKP HK MR556/416 Upper 9" 416C Style Conversion Kit
HKP HK Parts
$899.95MR556 & HK416 Upper Conversion Kit - 9" - HK 416C Style Finally an answer for all of those that have been wanting as close to the original, rare unicorn of a find HK 416C 9" barrel conversion kit for 416 or MR556. Each conversion kit upper or barrel...HKP-18674$899.95 -
Out Of Stock
HKP HK UMP 9mm Conversion Kit -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...HKP-02287$679.95 -
On Sale
HKP MP5 40/10 Low Impulse Locking Piece 90 Degree - BLEMISHED
HKP HK Parts
Now: $34.95Was: $49.95HKP MP5 40/10 Low Impulse Locking Piece 90 Degree - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Marked For the MP5 40 or 10mm Firearms. Made out of...HKP-18272-BNow: $34.95Was: $49.95 -
Out Of Stock
HKP PTR-32 (7.62x39) Complete Bolt Group
HKP HK Parts
$359.95US Made PTR 32 Bolt Group Complete Semi-Auto. Factory correct bolt head and locking piece for use in the PTR 32 chambered in 7.62X39. Brand new May 2015 manufacture. This is the correct bolt for all PTR 32 rifles with 12"and 16" barrels.HKP-17388$359.95 -
Out Of Stock
HKP/H&K UMP 9mm Conversion Kit - Threaded Barrel 1/2x28 - 3-Lug
HKP HK Parts
$999.95HKP/H&K UMP 9mm Conversion Kit - Threaded Barrel 1/2x28 - 3-Lug UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those who have already done the USC-UMP conversion. The total...HKP-02285$999.95 -
PTR PDW (7.62x39) & (7.62x51/.308) Semi-Auto Bolt Carrier
PTR
$260.95US-Made PTR PDW Semi Auto Carrier Made by PTR using the same blueprints and materials the German HK factory uses, has allowed PTR91 to manufacture the finest of HK-style firearms here in the US. The PDW semi-carrier is another example of superior...HKP-14140$260.95 -
RCM HK MP5 & MP5K 40/10 SD 115 Degree Locking Piece
RCM
$44.95RCM HK MP5 & MP5K 40/10 SD 115 Degree Locking Piece Compatible With: MP5/K 10 MP5/K 40HKP-21525$44.95 -
RCM HK MP5 & MP5K 40/10 SD 120 Degree Locking Piece
RCM
$44.95RCM HK MP5 & MP5K 40/10 SD 120 Degree Locking Piece Compatible With: MP5/K 10 MP5/K 40HKP-21524$44.95 -
RCM MP5K 40/10 Full Auto Bolt Carrier
RCM
$157.95MP5K 40/10 Full Auto Bolt Carrier - Latest Upgraded Version This part is built from billet ordnance steel. This US-made MP5K 40,10 style carrier is made with Tungsten and is heat-treated, providing the finest American-made carrier...HKP-01826$157.95 -
Omega HK UMP .45 Semi Auto Bolt Carrier - Complete
OMEGA
$359.95Omega HK UMP .45 Bolt Carrier Complete - Semi Auto Replacement part for USC to UMP conversions. Marked .45 semi auto just like the OEM carrier. Compatible With: HK UMP .45 Includes: Extractor Firing Pin Firing Pin Spring Firing Pin Retaining Pin The...HKP-21316$359.95 -
H&K 21E/11E/PSG1/MSG90 Firing Pin
H&K Heckler & Koch
$119.95HK German 21E, 11E, PSG1, & MSG90 Firing Pin New HK genuine German firing pin. These firing pins are no longer in production from HK. We have a limited number available and once they are gone, they are gone for good. Compatible With: HK...HKP-01758$119.95