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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HK45, USP V5, V6, V7 Tube
H&K Heckler & Koch
$5.95HK USP/45 Variants 5, 6, & 7 Tube Compatible With: HK USP 9mm HK USP 40 S&W HK USP 45 AHKP-02163$5.95 -
Out Of Stock
HK45, HK45 Compact , USP, USPC LEM Sear
H&K Heckler & Koch
$0.00HK USP, USPC, 45, & 45C LEM Sear LEM Hammer Fit Replaces The LEM Hammer In The Following Pistols: USP USPCHKP-02704$0.00 -
HK45, HK45 Compact, USP V5 Complete Bobbed Hammer DAO
H&K Heckler & Koch
$68.95Complete Bobbed Hammer DAO Compatible With These Variants 5, 6, 7: USP 45 ACP USP CoHKP-01592$68.95 -
HK MR556, MR762 Fixed Tactical Sling Adapter
H&K Heckler & Koch
$86.95HK MR556 & MR762 Factory Sling Adapter - Fixed Factory HK German design & the finest design available & made to last. New HK manufactured part to allow the factory HK416, MR762 slings to fit & work...HKP-17553$86.95 -
Out Of Stock
HK416, MR556 Upper 8" 416C Style Conversion Kit
HKP HK Parts
$1,285.95Upper Conversion Kit for HK416 and MR556 8 inch barrel - 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 8" barrel...HKP-18629$1,285.95 -
HK G36 Lower Housing - 3 Position Navy 0,1,F Pictogram
H&K Heckler & Koch
$600.00H&K G36 (5.56/.223) 3 Position (0,1,F Pictogram) Navy Style Lower Housing This lower housing, featuring the 3 position (0,1,F) pictogram, is offered without internals. Previously, G36 lowers were...HKP-02230$600.00 -
HK USC Buttstock - Black - Used
H&K Heckler & Koch
$148.95HK USC .45 buttstock Stock Used in Vg shape or better NO BUFFER included. Pull off from HK German USC rifles. HK German manufactureHKP-02475$148.95 -
Out Of Stock
HK21E, HK23E Backplate Assembly With Buffer
H&K Heckler & Koch
$449.95HK 21E Backplate Assembly With Heavy Buffer Genuine Heckler and Koch. Unique back plate assembly for a pistol type build or a low profile addition to the HK21E/HK23E. Compatible With:HKP-01407$449.95 -
HK21 Barrel Grip Axle Pin
H&K Heckler & Koch
$9.95HK21 Barrel Grip Axle Pin Factory axle pin for HK21 barrel handle release levers.HKP-15451$9.95 -
Out Of Stock
HK PSG1 Firing Pin Spring
H&K Heckler & Koch
$0.00HK German PSG-1 Firing Pin Spring. New HK German. A Great Item To Have On Hand As A Spare.HKP-00535$0.00 -
On Sale
PTR PDW Bolt Carrier - Semi Auto - 7.62x39 and 7.62x51
PTR
Now: $146.59Was: $229.95PTR PDW Semi Auto Carrier - US Made Semi-automatic bolt carrier manufactured by PTR in the United States using HK-pattern specifications. Designed for PTR PDW platforms and counts as one U.S.-made...HKP-14140Now: $146.59Was: $229.95 -
Out Of Stock
HK33, HK91, G3 A2 Fixed Buttstock Buttpad - Heavy Rubber
H&K Heckler & Koch
$0.00HK German Heavy Rubber Butt Pad The HK German heavy rubber butt pad is a direct replacement to a standard fixed stock butt pad that can be replaced and upgraded in seconds. This butt pad extends the...HKP-00525$0.00