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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$5.95 -
On Sale
HK G36, SL8 Bolt Group Fork
USA
Now: $6.98Was: $10.95G36 & Sl8 Bolt Group Fork For Cocking Handle - USHKP-18774Now: $6.98Was: $10.95 -
HK91, G3 Complete Tungsten Full Auto Bolt Group
HKP HK Parts
$549.95HKP HK 91/G3 (7.62x51/.308) Complete Tungsten Full Auto Bolt Group US Made HK 91/G3 Full Auto Bolt Group Complete - NEW Each bolt group is built using HK factory prints, specs here in the US. As an...HKP-16249$549.95 -
HK91, G3 Rear Sight
H&K Heckler & Koch
$28.95HK German Factory Rear Sight Assembly With Drum Assembly - New Each rear sight is a brand new, old stock genuine Heckler & Koch rear sight. Comes as shown. Mounting hardware is offered separately...HKP-00361$28.95 -
On Sale
HK MP5 Trunnion - .40 S&W, 10mm
HKP HK Parts
Now: $125.96Was: $139.95MP5 40 & MP5 10mm Trunnion Machined from ordnance-grade steel and heat-treated to factory specs. Each has the bullet guides pre-installed and included. These are the best USA-made trunnions on the...HKP-02737Now: $125.96Was: $139.95 -
HK MP5K, SP89, SP5K AR M4 Adapter and Stock - 9mm
HKP HK Parts
$229.95HK MP5K, MP5K-N AR Magpul Stock Each HK MP5K AR stock adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct H buffers to protect your...HKP-17175$229.95 -
On Sale
HK MP5, HK94, SP5 Trigger Pack - Flat Trigger - 9mm - 4 US Made 922r Parts
HKP HK Parts
Now: $191.22Was: $299.95HKP Zenith 9mm US Made Trigger Pack With Flat Trigger Semi auto trigger pack complete with flat trigger installed. Completely assembled & ready to drop in. The remaining parts are all German HK Or...HKP-18513Now: $191.22Was: $299.95 -
On Sale
HK SP5 Trigger Group - Super Safety
War Hammer Armaments
$562.46 - $674.95War Hammer Armaments OEM Polymer SP5 Super Safety Lower Receiver War Hammer Super Safety complete lower for SP5 platforms. Constructed of Kevlar and carbon-fiber–infused polymer, this complete lower...HKP-22826-M$562.46 - $674.95 -
On Sale
HK MP5, AP5 Full Auto Sear Spring Spacer
MKE
Now: $1.76Was: $1.95MKE Distance Sleeve for HK MP5 and AP5 Features: Precision-machined roller used in traditional roller-delayed trigger packs.HKP-22477Now: $1.76Was: $1.95 -
On Sale
HK MP5, HK91, G3, PTR Magazine - 5 Round - Black - BLEMISHED
HKP HK Parts
Now: $33.73Was: $79.95HK91, G3, MSG90 Magazine - 5 Round - Black - BLEMISHED PITTING COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE...HKP-16250-BL-BNow: $33.73Was: $79.95 -
Out Of Stock
HK MP5K, SP5K Super Safety Lower
AS Designs
$649.95AS Designs Super Safety Lower for the HK MP5K & SP5K Platform The ASD Super Safety Lower allows for faster follow-up shots by resetting after each shot. This is a true drop-in trigger and housing...HKP-22386-M$649.95 -
HK21E Starter Tab with 50 DM6 / M13 Links - .308 / 7.62x51
$24.95HK21E Starter Tab with 50 DM6/M13 Links Set includes one HK 21E correct M13 starter tab and 50 DM6/M13 disintegrating metal links. Compatible With: HK21EHKP-21904$24.95