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
HK91, G3 Locking Piece #17 - 36 Degree
RCM
Now: $44.95Was: $49.99RCM HK G3 HK91 36 Degree Locking Piece #17 One of the best ways to slow down and tame that HK21. Can also be used for HK91 and G3 special projects such as suppressors, and heavier than normal loads. This is also the factory correct locking piece...HKP-02520Now: $44.95Was: $49.99 -
HK G36 Magazine - 30 Round
H&K Heckler & Koch
$124.95HK German G36 30 Round Magazine HK German 30-round magazine, designed to perfectly fit all G36, G36K, and G36C variants, as well as converted SL8's with the G36 magwell. These are brand-new, top-quality magazines straight from the factory. Keep in mind...HKP-00624$124.95 -
On Sale
HK MP5 .22 Optic Mount - Minimalist - Picatinny Rail
HKP HK Parts
Now: $77.95Was: $97.95HKP HK MP5 .22 Minimalist Picatinny Rail Optic Mount Our new picatinny style optic mount is a game changer for those that want to have a minimalist look on their MP5 .22. You can have a picatinny rail with out having to compromise all the real estate...HKP-21369Now: $77.95Was: $97.95 -
HK416, MR556 Slim Line Buttstock
H&K Heckler & Koch
$97.95Heckler and Koch HK416, MR556 Slim Line Retractable Stock New from HK Germany the slim line retractable stock fits all commercial & mil-spec AR-15/M16 buffer tubes. Marked with the HK logo and issued on specialized HK416 and MR556 rifles. Compatible...HKP-16244$97.95 -
On Sale
HK VP9, P30 Magazine Floorplate Extension - 9mm, .40 S&W
HKP HK Parts
Now: $19.95Was: $24.95HKP HK Parts 9mm Magazine Extension Floorplate for HK VP and HK P30 Extended baseplate that adds about .30" in length to the bottom of the magazine and replaces the stock floor plate on the VP9/P30 & VP9SK, P30SK magazine. The extended length...HKP-17631-MNow: $19.95Was: $24.95 -
On Sale
HK MP5, HK90 Series Ejector Axle Spring Ring - SEF, Ambi
USA
Now: $1.45Was: $1.95Ejector Lever Axle Retaining Spring This is the perfect spring ring to replace your worn out ejector lever axle spring ring. Made to HK spec for the best US replacement part on the market. Replacement of the retaining spring clip is necessary to keep...HKP-20629Now: $1.45Was: $1.95 -
HK USP Full Size Magazine Floorplate - 9mm, .40 S&W - 13,15 Round - Extended
H&K Heckler & Koch
$29.95Heckler and Koch 9mm and .40 S&W Extended Floor Plate for Full Size HK USP Each new HK German extended floor plate provides additional room for your pinky on the full-size USP 9mm or .40 pistol. An easy swap for your standard floorplate USP 9mm and ...HKP-02478$29.95 -
Out Of Stock
HK Mount for Aimpoint, HoloSun, Sig Romeo 5
Botach Tactical
$59.95Battle Steel HK Mount for Aimpoint, HoloSun, & Sig Romeo 5 The lowest mounting solution for HK MP5/HK33/HK53 firearms for the Aimpoint T-1/T-2 mounting style optics. Delivers an absolute co-witness for all Aimpoint Micro, Sig Romeo 5, & HoloSun...HKP-19529$59.95 -
HK91, G3 20 Round Magazine - Steel - Excellent
H&K Heckler & Koch
$36.95HK German 20 Round Steel Magazine - Very Good To Excellent Shape Each magazine in this offering is the best of the used steel surplus magazines available, features the best finish, and has the lowest amount of wear possible. No longer in production,...HKP-00834$36.95 -
Out Of Stock
HK33, HK53, HK93, AP53 Magazine - 30 Round - Translucent
MKE
$27.95MKE HK33, HK53, HK93, AP53 30 Round Translucent Magazine MKE-manufactured 30-round translucent magazine for HK33-pattern rifles. Built to military specifications with a reinforced polymer body for reliable feeding and easy visual round count...HKP-21897$27.95 -
HK MP5, HK90 Series Pinned Hammer - Full Auto
H&K Heckler & Koch
$29.95Hammer, Full Auto HK 90 Series Trigger Packs - German HK - Used German HK Hammer- used, surplus in VG-EXC shape and in perfect working order. With the proper hole on the hammer to pin the strut in place. This hammer is the hammer that is most commonly...HKP-18305$29.95 -
HK91, G3 Recoil Spring
H&K Heckler & Koch
$7.95HK German G3, 91, PTR Recoil Spring Best price in the country, on a new German HK factory recoil spring. No surplus or used springs here. Factory-fresh and HK German. Stock up at this price you can afford to keep a few as spares, why buy surplus springs...HKP-00360$7.95