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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HK MP5 Extractor Rebuild Kit - 9mm - RCM E Bolt Head
RCM
$64.95RCM Complete Extractor Rebuild Kit for MP5 E Bolt Heads - 9mm Complete extractor rebuild kit for RCM MP5 E bolt heads in 9mm. Made in the USA from steel, this kit is designed to refresh...HKP-22833$64.95 -
On Sale
HK UMP, USC Front Sight - Omega
OMEGA
Now: $8.96Was: $9.95Omega UMP And USC Front Sight Front sight for HK UMP and HK USC Compatible With: UMP USCHKP-22513Now: $8.96Was: $9.95 -
Muzzle Brake - 5.56 and .308 - Threaded 5/8x24 RH
HKP HK Parts
$29.95HKP muzzle brake threaded 5/8x24 RH for 5.56/.223 and 7.62x51/.308 firearms This HKP muzzle brake is manufactured in the USA to HK specifications and is designed for use on 5.56 and .308 rifles. It...HKP-22508$29.95 -
On Sale
WOOX M-LOK Rail Covers - Checkered - GEN2
WOOX
$35.06 - $44.06WOOX Checkered GEN2 HK Rifle, SMG M-LOK Rail Covers The checkered GEN2 M-LOK rail covers upgrade any M-LOK or KeyMod handguard with a warmer feel, more traction, and added heat protection. The...HKP-22463-M$35.06 - $44.06 -
On Sale
WOOX Edge Stock - Walnut - Picatinny Mount
WOOX
$206.06 - $269.06WOOX Edge Stock - Walnut The WOOX Edge Stock is a premium upgrade for rifles and SMGs featuring a 3 Picatinny stock interface. It blends a precision-machined aluminum body with an American walnut...HKP-22460-M$206.06 - $269.06 -
On Sale
HK MP5, MP5K Flash Hider for Tri-Lug Barrels - 1/2x28 - Taper Mount
JMAC Customs
Now: $105.26Was: $116.951/2x28 - Plan B Taper Mount Flash Hider for MP5 & MP5K This flash hider is specifically designed for use on MP5, MP5K, and clone firearms featuring the MP5-spec. tri-lug. The internal profile clears...HKP-22407Now: $105.26Was: $116.95 -
Rail Panel Cover - M-LOK - 3 Slot
JMK
$18.95 - $23.95JMK Rail Panel Cover - M-LOK - 3 Slot JMK M-LOK rail panels are compatible with platforms featuring M-LOK slots. These modular panels are suited for numerous applications. Each panel is sold...HKP-22403-M$18.95 - $23.95 -
On Sale
AK Binary Trigger - Curved - BFSIII - BLEMISHED
FA Franklin Armory
Now: $289.49Was: $534.95Franklin Armory BFSIII AK-C1 Standard Caliber - 7.62x39 - BLEMISHED DAMAGED PACKAGING - PRODUCT UNAFFECTED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLDHKP-19833-BNow: $289.49Was: $534.95 -
HK VP9A1 K Magazine Replacement Kit
H&K Heckler & Koch
$23.95HK VP9A1K Magazine Replacement Kit Magazine replacement kit with all necessary components: spring, floorplate, and locking plate. Compatible With: HK VP9A1 KHKP-22300$23.95 -
On Sale
HK MP5, AP5 SEF Trigger Pack Housing - Semi-Auto
MKE
Now: $109.34Was: $124.95MKE HK MP5/AP5 SEF Trigger Pack Housing MKE trigger pack Housing for semi-auto SEF trigger housing. OEM part for Century AP5. Compatible With: HK MP5, MP5K with SEF housing CenHKP-22259Now: $109.34Was: $124.95 -
Out Of Stock
HK417, MR762, G36 Flash Hider - ROTEX SF - Threaded 15x1 RH
B&T Brugger & Thomet
$119.95B&T Brugger and Thomet Flash Hider fits our HK417, HK MR762, and HK G36 - ROTEX SF B&T flash hider for any 5.56/.223 or 7.62x51/.308 firearm threaded in 15x1 RH. Compatible With: HK41HKP-22162$119.95 -
HK CC9 Firing Pin
H&K Heckler & Koch
$55.95H&K CC9 Firing Pin Made in Germany by H&K, the firing pin for the CC9 pistol strikes the primer to ignite the cartridge. CompatibHKP-22136$55.95