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, HK33, HK53, HK93, HK91, G3 Catch with Roller for SEF, Navy Trigger Packs - USED
H&K Heckler & Koch
$4.49Friction Sear-USED For SEF, Navy Trigger Packs hk335393, 91, G3, Used in excellent condition, HK German Friction Sear for SEF & Navy trigger packs. This item is also referred to as the catch with...HKP-16197$4.49 -
On Sale
HK91, G3, HK33, HK53, HK93 Bayonet Adapter - Hardware Included - USED
H&K Heckler & Koch
Now: $119.95Was: $149.95Heckler and Koch German Bayonet Adapter with Screw and Hardware - USED USED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALESHKP-00021-USEDNow: $119.95Was: $149.95 -
HK USP, USP Compact, P2000 Magazine Release Lever
H&K Heckler & Koch
$12.95Heckler and Koch Magazine Release Lever for HK USP and HK P2000 Compatible With: USP USP Compact 9mmHKP-02480$12.95 -
Out Of Stock
HK USPC, P2000 Magazine - 9mm - 28 Round
HKP HK Parts
$74.95H&K 28 Round HK USPC/P2000 9mm Magazine New HK German USPC, P2000 Magazine body combined and pre-installed along with the HK Parts 28 round mag extension kit fully installed. Each offering is a...HKP-17203$74.95 -
HK UMP, USC Lower Axle
H&K Heckler & Koch
$9.95HK UMP & USC Lower Axle - German 3 X lower axle pins are used for each trigger group or lower all pins are the same size, except the mag release axle on the USC model.HKP-01893$9.95 -
HK91, G3 Wood Buttstock with Enhanced Buffer Installed
H&K Heckler & Koch
$229.95HK German G3, 91, PTR Wood Stock With- Enhanced DMR Buffer Installed Each stock includes: Metal Backplate With Recoil Spring Installed Modified by our HK gunsmith and an enhanced heavy buffer has...HKP-16697$229.95 -
HK91, G3 Backplate and Recoil Rod Assembly Complete
H&K Heckler & Koch
$49.95HK German Backplate Assembly Complete: Excellent Refinished - German HK G3 backplate complete that has been refinished in black oxide. Great replacement for worn out or damaged backplates. Compatible...HKP-00355$49.95 -
HK33, HK53, HK93 Trigger Pack, Complete - SEF Full Auto
H&K Heckler & Koch
$359.95HK German 33, 53, & 33K 5.56 Full AutoHKP-00731$359.95 -
HK90 Series Catch Lever Axle - Ambi Trigger Packs
H&K Heckler & Koch
$8.95H&K Catch Lever Axle For Ambidextrous Trigger Packs This is the axle that is found in all ambidextrous trigger packs for the 90 series that retains the catch lever assembly.HKP-01552$8.95 -
On Sale
HK MP5K, SP89, SP5K Brace With Direct Fit Adapter
SB Tactical
Now: $206.96Was: $229.95Side Folding Pistol Stabilizing Brace with HK Parts Adapter - HK MP5K, SP89, SP5K & Clones Side Folding Pistol Stabilizing Brace with HK Parts Adapter. The HK Parts adapter offers a QD attachment...HKP-19451Now: $206.96Was: $229.95 -
On Sale
HK UMP, USC, G36, SL8 Front Night Sight
XS Sights
Now: $76.46Was: $84.95XS Sight Systems Trijicon - Front Night Sight Standard dot, the perfect size and fitment. This is a direct replacement for the factory sight. The night sight installs within a couple of minutes. The...HKP-00808Now: $76.46Was: $84.95 -
On Sale
HK91, G3 Magazine Block - 20 to 10 Round Conversion
Raddlock
Now: $4.46Was: $9.95HK 91, G3, & PTR 10 Round Magazine Plug The Raddlock magazine plug is designed to be installed in a 20-round magazine to limit the capacity to 10 rounds for restricted capacity states. Compatible...HKP-02443Now: $4.46Was: $9.95