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 G36C, G36K Tri-Rail Set - Complete
UTG
Now: $51.97Was: $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-00272Now: $51.97Was: $64.95 -
On Sale
HK MP5, Zenith, Omega Bench Mat
HKP HK Parts
Now: $19.96Was: $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-17066Now: $19.96Was: $24.95 -
HK UMP, USC Recoil Buffer
HKP HK Parts
$11.95HKP USC & UMP Recoil Buffer Replaceable spare lower housing or buffer for buffer housings. This is a high wear & replacement item and a must have for spare parts. Compatible With: HKHKP-18746$11.95 -
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 -
On Sale
HK MP5 Picatinny Mount Base - Battle Steel
Botach Tactical
Now: $49.46Was: $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-19807Now: $49.46Was: $59.95 -
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 -
On Sale
HK91, G3 Stock Set - O.D. Green - Surplus
HKP HK Parts
Now: $19.96Was: $24.95Original German Army Used Surplus G3, 91, PTR OD Green Stock Set Factory HK German production. Each stock set is used but in perfect working order. Each set is in overall good condition. Most will...HKP-16332Now: $19.96Was: $24.95 -
HK USP, USP Tactical, USP Expert Complete Recoil Assembly
H&K Heckler & Koch
$94.95H&K HK USP/ Tactical/ Expert Complete Recoil Assembly Brand new factory German manufacture. Compatible With: HK USP 45 TacticalHKP-01160$94.95 -
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 -
On Sale
HK USP9, USP40 Compensator
HKP HK Parts
Now: $159.96Was: $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-20813Now: $159.96Was: $199.95 -
HK Rifle Magazine and Receiver Cleaning Brush
H&K Heckler & Koch
$24.95HK Receiver & Magazine Cleaning Brush For All HK's Fits all standard 8-32 US thread cleaning rods. Made and designed for cleaning the HK magazines as well as the upper and lower receivers and mag...HKP-00141$24.95 -
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