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 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 -
HK VP9 Optic Plate #9 - Trijicon RMR CC - Red Dot Pistol Mount
HKP HK Parts
$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-20027$49.95 -
HK USP, USPT Magazine Extension +5 - 9mm
HKP HK Parts
$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-M$49.95 -
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 -
HK UMP, USC Top Receiver Rail - Enhanced - Picatinny
HKP HK Parts
$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 ease of use and a beautiful fit. Made from billet...HKP-14541-M$49.95 -
HK91, G3 Flash Hider - Threaded 5/8x24 RH
HKP HK Parts
$27.95HK91 (7.62x51/.308) Flash Hider - Threaded 5/8x24 RH Made in the USA to the exact specifications of the original HK flash hider, following strict HK standards. This flash hider offers the best quality and price in the country, making it the finest option...HKP-17930$27.95 -
HK45 Magazine - 13 Round - .45 ACP
HKP HK Parts
$104.95HKP 13 Round HK 45/45 Tactical .45 ACP Magazine HK45 & HK45 Tactical +3 magazine extension coupled with a new HK German 10 round HK45 magazine. Each unit is then fully assembled as a 13 round HK45, HK45 Tactical magazine. Ideal for concealed carry,...HKP-18387$104.95 -
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 -
Out Of Stock
B&T APC45, SPC45, GHM45 Magazine - 25 Round
B&T Brugger & Thomet
$145.00B&T .45 ACP 25 Rounds Magazine B&T's APC45 replacement magazines are the same straight-body stick mags that ship with new B&T firearms. These high quality factory magazines hold 25 rounds of .45 ACP ammunition...HKP-17438$145.00 -
HKP .45 ACP Vented Micro Comp - Threaded .578x28 RH
HKP HK Parts
$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-20213$29.95 -
HK MP5, MP5K Magazine Release Set - 4 Piece
HKP HK Parts
$79.95HKP HK Parts 4-Piece Magazine Release Set for HK MP5 and HK MP5K Each magazine catch set consists of 4 pieces and is a mixture of HK Germany and USA made parts. This is the set that provides left-to-right mag release controls. Each Set Includes: Mag...HKP-00912$79.95 -
HK VP9, VP9SK, VP40 Clamping Sleeve Insert, Ejector Housing
H&K Heckler & Koch
$1.95Clamping Sleeve For Insert, Ejector Block Housing For HK VP9, VP40 This is the factory correct roll pin for holding the ejector block housing in the frame. New HK German manufacture. Compatible With: HK VP9 HK VP9SK HK VP40HKP-16805$1.95