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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HK90 Series Stock Locking Pin - Large
MKE
$6.95MKE Large Push Pin for your HK90 Series Stock Each large stock push pin is used to retain the stock to the receiver on the 90-series firearms. These are great replacement or spare part to keep on...HKP-21593$6.95 -
HK MP5, Zenith, Omega Bench Mat
HKP HK Parts
$24.95HKP Bench Mat - MP5, Zenith, Omega The HK Parts MP5 mat is the perfect cleaning and repair mat designed specifically for your Heckler & Koch MP5. Have fun and learn while you work on your favorite...HKP-17066$24.95 -
HK MP5, MP5K Dual Magazine Clamp Bundle - 9mm - Turkish Contract
HKP HK Parts
$99.95HKP HK Parts Dual 9mm Magazine Clamp Bundle for HK MP5 and HK MP5K - Turkish Contract HKP dual mag clamp with two Turkish contract 30 round 9mm MP5 magazines. Ideal for faster mag swaps and having...HKP-22492$99.95 -
HK USP Full Size Optic Plate - Trijicon RMR / SRO, Holosun 407C / 507C - Red Dot Pistol Mount
Evolution Gun Works
$49.95Evolution Gun Works HK USP Full Size Trijicon RMR-SRO, Holosun 407C-507C Mount Includes: Mounting hardware Features:HKP-20042$49.95 -
Out Of Stock
HK G36, SL8 Push Pin for Handguards, Lowers, Magwells
H&K Heckler & Koch
$18.95HKP HK G36, SL8 Forearm, Lower, Magwell U.S Push Pin U.S. made G36 push pin finished in black oxide. This push pin is also required for converting the SL8 to a G36. G36's use three of these factory...HKP-20730$18.95 -
UZI Lower with Grip Complete
IMI
$99.95Uzi Lower Complete - IMI Manufactured For The German Military Surplus IMI Manufactured Uzi Grip (lower) complete with all internals as shown. Each lower comes complete with all internals, grips and...HKP-16683$99.95 -
HK MP5 Picatinny Mount Base - Battle Steel
Botach Tactical
$59.95Botach Tactical Battle Steel HK MP5 Mount - Picatinny Base Botach Tactical Battle Steel Ultra-Low-Profile Mount for HK MP5/HK33/HK53 Firearms.HKP-19807$59.95 -
Out Of Stock
HK416, MR556 Buffer Tube Castle Nut - A5 Extended
HKP HK Parts
$39.95HKP HK Parts A5 Style Extended Length Castle Nut for HK 416, MR556 Unlike the factory German A5 castle, our A5 extended buffer tube castle nut is compatible with both mil-spec and commercial buffer...HKP-18058$39.95 -
HK G36C, G36K Tri-Rail Set - Complete
UTG
$64.95UTG 1 Long and 2 Short Rail Rail Set for HK G36C, G36K, G36 .22LR Three-piece Picatinny rail set for G36-pattern handguards or forearms with built-in rail mounting points. Includes bottom, left, and...HKP-00272$64.95 -
HK USP9, USP40 Compensator
HKP HK Parts
$199.95HK Parts Compensator for HK USP The HK Parts HK USP compensator will add a sleek and tactical look to your USP. With the quick and easy addition of our compensator you will add plenty of benefits...HKP-20813$199.95 -
On Sale
HK UMP, USC Top Receiver Rail - Enhanced - Picatinny
HKP HK Parts
$31.84 - $49.95HKP HK Parts US Made Top Receiver Rail with Hardware for HK USC and UMP The extended length allows the use of all optics that fit on a Picatinny rail. This unit has a contoured, no-snag design for...HKP-14541-M$31.84 - $49.95 -
HK MP5, HK94, MP5K, SP89 Firing Pin - Titanium
HKP HK Parts
$49.95HK Parts Titanium Firing Pin for HK MP5, HK MP5K, HK94, and HK SP89 Grade 6 Titanium firing pin. Each was made using the factory HK specifications from original HK German blueprints. This is the...HKP-17601$49.95