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 VP9L Railok™ Compensator
HKP HK Parts
Now: $97.46Was: $189.95HK Parts Railok™ Mounting System Compensator: H&K VP9L The HK Parts Railok™ mounting system compensator strikes a seamless balance of form and function. Users will immediately notice the reduction...HKP-21253Now: $97.46Was: $189.95 -
On Sale
Flare Gun and Flare Kit - 26.5mm - Polish Signal Flares
AC-Unity
Now: $149.96Was: $249.95AC-Unity 26.5mm Flare Gun With Polish Signal Flares The AC-Unity flare gun is a durable launcher designed to dispense 26.5mm flares or smoke grenades. THKP-20154Now: $149.96Was: $249.95 -
HK G36, SL8 Locking Push Pin for Handguards, Lowers, Magwells - Heckler and Koch
H&K Heckler & Koch
$48.95New HK German G36 & HK SL8 Push Pin For Forearm, Mag Well Or Lower Each push pin is a factory German part and is new. This is also required for those doing the SL8 to G36 style conversions. A factory...HKP-00804$48.95 -
On Sale
HK91, G3 Magazine Loader
Maglula
Now: $25.46Was: $29.95HK91, G3, PTR .308 LULA Mag Loader For those that have used Maglula products they offer the best mag loaders on the planet. Features: Loads a round a second, can unload the entire 20 round magazine...HKP-16228Now: $25.46Was: $29.95 -
HK MP5, MP5K, APC Muzzle Brake - Quick Detach - 3 Lug - 9mm
B&T Brugger & Thomet
$140.00B&T HK MP5/MP5K Quick Detach Muzzle Brake - 3-Lug B&T Swiss manufactured QD muzzle brake for HK tr-lug pattern firearms. Specifications: Diameter 31 mmHKP-16898$140.00 -
On Sale
HK Mark 23, USP Magazine with Extension, Complete - 19 Round - .45 ACP
HKP HK Parts / Heckler & Koch
Now: $98.96Was: $109.95HKP HK Parts and Heckler and Koch Magazine Extension Complete 19 Round - HK Mark 23 and USP .45 Designed specifically for the Mark 23 and USP .45—perfect for those who want extra firepower at the...HKP-21586Now: $98.96Was: $109.95 -
HK91, G3 Magazine Release - Anti-Rattle - Surplus
H&K Heckler & Koch
$24.95Heckler and Koch Anti-Rattle Mag Release from Surplus for HK G3, HK91, PTR, HK33, HK53, HK93 Pulled from demilled German HK firearms. Once refinished this item can be made to look like new. For...HKP-17855$24.95 -
HK MP5, HK33, HK53, HK93, HK91, G3 Trigger Housing - SEF - Clipped and Pinned - 9mm, 5.56 / .223, 7.62 / .308 - Excellent
H&K Heckler & Koch
$149.95H&K MP5, 93/53/33, G3/91 (9mm, 5.56/.223, 7.62/.308) SEF Trigger Housing - Clipped & Pinned - Excellent In excellent shape! Most have never been on a firearm. They may have storage and handling marks...HKP-19913$149.95 -
Out Of Stock
HK91, G3 Buffer - Folding Stock - Replacement
Choate
$3.95Choate HK 91 & G3 (7.62x51/.308) Folding Stock Replacement Buffer Choate .308 folding stock replacement buffer for all HK91/G3 PTR stocks. A great item to have on hand as these do wear and are prone...HKP-00211$3.95 -
HK MP5, SP5 Binary Trigger Group - Navy Pictogram
Magpul / FA Franklin Armory
$889.95Magpul SL HK MP5 Binary Trigger Group: Latest and greatest trigger group option for those looking for a binary option and the added comfort of the Magpul housing. We take a Magpul SL housing, our...HKP-21406-M$889.95 -
HK USP 9mm, .40 S&W Complete Recoil Assembly
H&K Heckler & Koch
$79.95Heckler and Koch New HK USP 9mm & .40 Cal Tactical Recoil Spring With Buffer Assembly - Complete This is a great spare or replacement item to have on hand, it is the factory OEM HK part for Tactical...HKP-01475$79.95 -
Thread Protector - 9mm - Enhanced - 1/2x28 RH
HKP HK Parts
$19.95 - $29.95HKP HK 9mm Enhanced Thread Protector - Threaded 1/2x28 RHHKP-17977-M$19.95 - $29.95