Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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HK33, HK53, HK93 Receiver Flat - Complete Weldment Set
HKP HK Parts
$229.95HK .223, 556, & 300 BLK Receiver Flat With Complete Weldment Set Combo Each flat and weldment set comes with 223/556/300BLK complete as a builders combo ready to assemble. Compatible With:HKP-00006$229.95 -
On Sale
HK MP5 Receiver Flat - .40 S&W, 10mm
HKP HK Parts
Now: $146.21Was: $399.95MP5 40 & MP5 10mm Receiver Flat - USA The new and latest production with the weldment locations is already lasered and ready to go. This flat is the finest available for the MP5 40/10 family of...HKP-00767Now: $146.21Was: $399.95 -
HK416, MR556 Gas Block - Slimline - Vented
H&K Heckler & Koch
$145.95Heckler and Koch Low Profile Complete Gas Block for HK MR556, HK416, HK GermanHKP-02660$145.95 -
AR-15 Super Safety - Forced Reset Selector - Ambidextrous Levers
Atrius
$249.95Atrius Ambidextrous Lever Forced Reset Selector for AR-15 Style Firearms The Atrius Forced Reset Selector gives AR-15 users three selector positions: SAFE, SEMI, and FULL SEMI. It is designed for...HKP-22349$249.95 -
Out Of Stock
HK UMP Barrel - .45 ACP - 7.87" - Threaded .578x28
HDPS
$349.95HK UMP .45 ACP Barrel - Threaded .578x28 HDPS UMP barrels are perfect for the USC to UMP conversions and for a replacement UMP .45 ACP barrel. They are considered by many to be the finest US-made...HKP-20872$349.95 -
HK416, MR556 Buffer Tube Wrench
HKP HK Parts
$29.95HK MR556 & HK416 Buffer Tube Wrench The perfect metric wrench to remove and install the MR556 & HK 416 castle nuts on the buffer tube. A perfect addition to have on hand for OTB or other HK buffer...HKP-17124$29.95 -
HK -6 Roller For Bolt Head 7.94mm - Under-sized
H&K Heckler & Koch
$27.95H&K -6 Roller For Bolt Head 7.94mm - Under-sized New HK German -6 roller that measures 7.94mm. For use with all HK 90 series firearms. Please Note: The price listed is pHKP-00342$27.95 -
HK MP5SD Tri- Rail Mount for Suppressor - 9mm
B&T Brugger & Thomet
$158.95B&T MP5SD 9mm Tri- Rail Mount for Suppressor Can accommodate suppressors up to 1.60 inches in overall diameter. Specifications: Color: BHKP-16880$158.95 -
HK CC9 Magazine Floorplate - 9mm - 12 Round
H&K Heckler & Koch
$5.95H&K CC9 Magazine Floorplate - 12 Round Factory German HK magazine locking plate for use with the HK CC9 12 round magazine. Secures the extended baseplate to the magazine body.HKP-22148$5.95 -
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Cerakote
MKE
$64.95HK MP5 30 Round Magazine - MKE - AP5 - Cerakote Colors These MKE 30 round magazines are the perfect addition or replacement for your AP5 or MP5. Constructed of heat-treated steel for lasting strength...HKP-21341-M$64.95 -
Out Of Stock
HK P30SK Pistol Bench Mat
HKP HK Parts
$13.95HK P30SK Bench MatPerfect for the HK P30SK 9mm & .40 Cal Models This isn't your ordinary gun cleaning mat! Show your pride for your firearm while using this high quality neoprene rubber backed and...HKP-18090$13.95 -
HK416, MR556, MR762 Forward Assist Pin
H&K Heckler & Koch
$4.95Heckler and Koch's Forward Assist Pin for HK416, HK MR556, and HK MR762 Compatible With: HK416, MR556HKP-02662$4.95