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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On Sale
HK VP Series Curved Trigger - Blue
Lazy Wolf
Now: $71.21Was: $134.95Lazy Wolf Guns Curved Trigger for the HK VP Series In a collaboration with Lazy Wolf Guns, HK Parts is offering triggers for your HK VP9 and VP40 handguns. The drop in VP9 series trigger is the best...HKP-19600Now: $71.21Was: $134.95 -
HK SP5 Spec Only 9mm SEF Navy Style Trigger Housing - Clipped and Pinned - USED
H&K Heckler & Koch
$89.95H&K SP5 Spec Only 9mm SEF Navy Style Trigger Housing - Clipped & Pinned - USED In used but good condition. It will have some nicks but overall this house is in good working condition. For use with...HKP-19488$89.95 -
HK VP9, VP40 Disassembly Lever Spring
H&K Heckler & Koch
$5.95Catch Spring For Disassembly Lever HK VP9, HK VP40 Compatible With: HK VP9 HK VP9A1 FHKP-16786$5.95 -
HK45, HK45 Compact, USP, USP Compact .45 ACP Trigger Bar
H&K Heckler & Koch
$45.95New HK German Factory Trigger Bar Compatible With: HK USP 45, USP .45 Tactical HK USP Compact .45 HK 45, HK45 TacticalHKP-01255$45.95 -
HK USP Raised Tactical Front Sight
H&K Heckler & Koch
$29.95H&K HK USP Raised Tactical Front Sight Compatible With: USP 9mm USP .40 USP .45HKP-01403$29.95 -
Out Of Stock
HK USPC Magazine with Extended Floorplate - .357 SIG - 10 Round -
H&K Heckler & Koch
$49.00Heckler and Koch 10 Round .357 Extended Floorplate Magazine for HK USP Compact Will work with .40 cal rounds. Brand new HK German manufactured.HKP-01238$49.00 -
HK SL8, G36 Piston Rod Assembly
H&K Heckler & Koch
$64.95Heckler and Koch Gas Piston Rod and Spring Assembly for HK G36 and HK SL8 Great for spare parts or to use on that HK SL8-G36 conversion. This is a high-wear item and a must-have spare part...HKP-02000$64.95 -
HK G36, SL8, USC, UMP Sight Screw - Rear
H&K Heckler & Koch
$19.95HK G36, SL8 & USC, UMP Rear Sight Screw Rear sight screw to retain HK G38/Sl8 & USC/UMP rear sights housings to the rear sight base. Compatible With: G36, SL8HKP-16382$19.95 -
Out Of Stock
HK USC, SL8 Sight Support Spring
H&K Heckler & Koch
$9.95H&K USC/SL8 (.45 ACP/5.56/.223) Rear Sight SpringHKP-16516$9.95 -
HK MP5, MP5K Muzzle Protector Cap - 3-Lug
H&K Heckler & Koch
$19.95H&K MP5, MP5K Muzzle Protector Cap - 3-Lug New HK German high-impact polymer muzzle protector, sealing cap. Simply slide the barrel cap over the exposed HK MP5, MP5K 3-lug barrel and remove when...HKP-17666$19.95 -
Out Of Stock
HK MP5, MP5K 3-Lug Blank Firing Adapter
H&K Heckler & Koch
$169.95H&K MP5/MP5K 3-Lug Blank Firing Adapter This part attaches to the end of the 3-lug barrel tip and will allow the use of 9mm blanks for training. A brand new HK German manufactured part...HKP-01990$169.95 -
On Sale
HK MP5, SP5 Lower - ARC
AS Designs
Now: $584.96Was: $649.95AS Designs ARC Lower for HK MP5, SP5, HK94 The ASD ARC Lower allows for faster follow-up shots by resetting after each shot. This is a true drop-in trigger and housing assembly featuring SEMI, ARC,...HKP-22545-MNow: $584.96Was: $649.95