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 Sling Clip Rivet Set - 3 Rivets
HKP HK Parts
Now: $5.95Was: $7.89HKP MP5 Sling Clip Rivet Set - 3 Rivets Factory correct MP5 sling clip rivet set (includes a set of 3 rivets). This is the factory correct rivet set to attach the HK sling clip to the left hand side of the magwell. Each set includes a set of 3 rivets for...HKP-17003Now: $5.95Was: $7.89 -
HK MP5 9mm Full Auto SEF Navy Style Trigger Group - Push Pin
H&K Heckler & Koch
$499.95HK German MP5 SEF Navy Style F/A Trigger Group Complete - Used Each trigger group is comprised of genuine Heckler & Koch products Includes: German full auto trigger pack with all F/A internals New German 3rd generation ejector German HK SEF selector...HKP-18094-PP$499.95 -
On Sale
HK VP9 Optic Plate #9 - Trijicon RMR CC - Red Dot Pistol Mount
HKP HK Parts
Now: $39.95Was: $49.95HK VP9 Series Optics Ready #9 - Trijicon RMR CC - Optic Mount - Steel Each plate is CNC machined from a solid billet of ordnance grade steel, deburred, tumbled and Cerakoted for the ultimate in durability and appearance. Each unit comes with 2 X T20...HKP-20027Now: $39.95Was: $49.95 -
On Sale
HK MP5 .22 LR Optic Mount - RMR, Holosun
HKP HK Parts
Now: $77.95Was: $97.95HKP HK Parts RMR and Holosun Optic Mount for HK MP5 .22 The finest mounting solution to properly mount your RDS on your MP5 .22. Our 3-piece optic mount installs quickly and securely using the provided hardware. Our mount is the perfect height to...HKP-20867-MNow: $77.95Was: $97.95 -
HK 9mm Adapter - 3 Lug - Threaded 13.5x1 LH
HKP HK Parts
$49.95HKP 9mm 3-Lug Adapter - Threaded 13.5x1 LH The HK Parts 3-Lug Adapter is internally threaded in 13.5x1 left hand. Our adapter allows the attachment of common 3-lug accessories: flash hiders, compensators, suppressors, etc. This is the finest machined HK...HKP-17410$49.95 -
Out Of Stock
HK416, MR556, MR762 Trigger Guard Pin
H&K Heckler & Koch
$9.95HK MR556 & HK 416 Trigger Guard Retaining Pin Compatible With: HK 416 HK MR556HKP-02678$9.95 -
HK MP5, HK94, SP5 Handguard - Wide
H&K Heckler & Koch
$74.95H&K MP5/SP5/HK94 Wide Forearm German HK MP5 Handguard, also known as the Tropical wide forearm. This is the real deal in HK German and the gold standard of HK MP5 handguard offerings. Compatible With: MP5, 94, SP5 MP5 40/10 MKE, POF, Zenith,...HKP-00174$74.95 -
On Sale
HK USP, USPT Magazine Extension +5 - 9mm
HKP HK Parts
Now: $39.95Was: $49.95HKP HK Parts 9mm +5 Magazine Extension for HK USP and HK USP Tactical This part is made in the USA out of aircraft grade hard coat anodized aluminum & steel hardware. Ultra-low profile & rock solid. With the addition of the +5 mag extension, the...HKP-21109-MNow: $39.95Was: $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 push pins per rifle whereas the SL8 has two.HKP-20730$18.95 -
On Sale
HK MP5K M-LOK Suppressor Handguard
MI Midwest Industries
Now: $161.95Was: $179.95MI HK MP5K M-LOK Suppressor Handguard The Midwest Industries M-LOK suppressor handguard is designed to fit over your suppressor for extra protection and extending mounting options. Made in the USA from 6061 aluminum for a lifetime of...HKP-21563Now: $161.95Was: $179.95 -
On Sale
HKP .45 ACP Vented Micro Comp - Threaded .578x28 RH
HKP HK Parts
Now: $23.95Was: $29.95HKP .45 ACP Vented Micro Comp - Threaded .578x28 RH The HK Parts Micro Comp & Thread Protector is a lightweight, dual-purpose accessory that functions as both a compensator and thread protector. It easily attaches to any factory-spec .578x28 RH .45...HKP-20213Now: $23.95Was: $29.95 -
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 tubes. Crafted from ordnance grade steel and nitrided...HKP-18058$39.95