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 MP5 Optic Mount - Aimpoint ACRO P-1 - .22 LR
HKP HK Parts
Now: $50.96Was: $98.95HKP - HK MP5 .22LR Optic Mount - ACRO Low-profile mount with a direct Aimpoint ACRO mounting interface. The smallest mount in the market with a sleek and clean overall look. Full co-witness, this...HKP-99353Now: $50.96Was: $98.95 -
HK91, G3 Retractable Buttstock Retaining Ring - 19x1.2mm
H&K Heckler & Koch
$12.95HK91, G3 19x1.2mm Retaining Ring for A3 Retractable Buttstocks This 19x1.2 retaining ring (circlip-style) is used in the G3 and HK91 A3 retractable buttstock assembly to help retain the locking...HKP-22482$12.95 -
On Sale
Woody Stock - Walnut - Picatinny Mount
WOOX
$206.06 - $269.06WOOX Woody Stock - Walnut The WOOX Woody Stock is a premium upgrade for rifles and SMGs featuring a Picatinny stock interface. Crafted from solid American walnut, it delivers classic warmth with...HKP-22461-M$206.06 - $269.06 -
On Sale
HK FMP G3 Early Type De-Milled Front End - No Cocking Handle Assembly
FMP HK CONTRACT
Now: $43.96Was: $68.95HK G3 - FMP Early Type De-milled Front End - No Cocking Handle Assembly Early style G3 front end with no hanger from de-milled FMP G3 parts kits. Perfect for custom builds. Includes: CoHKP-22377Now: $43.96Was: $68.95 -
On Sale
HK G3 Stock Cut Off Section - OD Green
FMP HK CONTRACT
Now: $1.56Was: $2.45HK G3 Stock Cut Off Section - OD Green De-milled G3 stock section. Manufactured by FMP on HK tooling. Compatible With: HK G3, HK91 In-spec. clonHKP-22376Now: $1.56Was: $2.45 -
On Sale
HK USC, SL8 Buttstock Screw - USED
H&K Heckler & Koch
Now: $8.26Was: $12.95H&K USC/SL8 (.45 ACP/5.56/.223) Buttstock Screw - USED ONLY 2 UNITS AVAILABLE - AS PICTURED 1 SCREW PER ORDER - SOLD INDIVIDUALLYHKP-01649-BNow: $8.26Was: $12.95 -
HK91, G3 Bolt Carrier - Full Auto - Surplus
H&K Heckler & Koch
$129.95HK Factory F/A Tungsten Filled Bolt Carrier Used German Surplus ONLY 1 UNIT AVAILABLE - AS PICTURED NOT TUNGSTEN FILLED USED PARTS AHKP-99804$129.95 -
HK CC9 Magazine Body - 9mm - 10 Round
H&K Heckler & Koch
$35.95Heckler and Koch 10-Round Magazine Body for HK CC9 OEM 10-round magazine body for the HK CC9, made in Germany by Heckler and Koch and ideal as a factory-spec replacement. Compatible With:HKP-22152$35.95 -
HK CC9 Slide Release
H&K Heckler & Koch
$46.95Heckler and Koch Slide Release for HK CC9 Factory slide release manufactured by Heckler and Koch for the CC9 platform. Allows manual release of the slide and engages the slide stop after the last...HKP-22124$46.95 -
HK MR556 A4 Upper, Complete - Full Auto and Ejection Door
H&K Heckler & Koch
$845.95HK Heckler and Koch A4 Complete Upper with Full Auto Ejection Door for HK MR556 The HK MR556 A4 Complete Upper is a superior factory assembly that comes fully equipped with a forward assist and an...HKP-21929$845.95 -
On Sale
HK MP5F, MP5 40, 10 Cocking Handle - BLEMISHED
H&K Heckler & Koch
Now: $29.21Was: $85.99H&K MP5F & MP5 40/10mm Cocking Handle - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL.HKP-00098-BNow: $29.21Was: $85.99 -
On Sale
HK G36, SL8 Brass Catcher
B&T Brugger & Thomet
Now: $216.71Was: $284.95B&T HK G36 & SL8 Brass Catcher This brass catcher is expertly crafted for the HK G36. The B&T QD attachment system enables quick mounting and dismounting. For optimal compatibility, the G36 must be...HKP-21530Now: $216.71Was: $284.95