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 MP5K, HK SP89 Top Rail
MI Midwest Industries
$129.95MI HK MP5K, HK SP89 Top Rail Midwest Industries picatinny and M-lok top rail for MP5, HK94 style weapons and clones. An amazing profile option for your MP5 style weapon. Offers a combination of strength, adaptability and extreme lightweight features...HKP-19113$129.95 -
HKP 22 Round HK VP9, HK P30 9mm Complete Magazine - Red
HKP HK Parts
$79.9522 Round Magazine Complete - Red Extension & Red Follower - 9mm - HK PARTS - HK VP9, HK P30 HK Parts +5 magazine extension coupled with a 17 round factory German magazine body adds 5 additional rounds total for a fully assembled 22 round HK VP9/P30...HKP-19414$79.95 -
HK VP9, VP40, USP Series, P Series Magazine Spring - 10 Round
H&K Heckler & Koch
$6.95New German HK Magazine Spring For 10 Round Magazines A must-have part as magazine springs are high wear and a common replacement item. Compatible With: HK USP 9mm HK USP 40 S&W HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK...HKP-01428$6.95 -
HK416, MR556 Rear Diopter Sight Assembly - 10.5"
H&K Heckler & Koch
$188.95H&K HK MR556/416 10.5" Rear Diopter Sight Assembly This is the proper rear sight for use on all HK 416 10.5 uppers and firearms. This is also a great sight alternative for those who need a lower sight setup for the AR, XCR, etc. To be used in...HKP-01109$188.95 -
HK UMP, USC Buttstock Axle Pin
H&K Heckler & Koch
$30.95HK German UMP Rear Stock Axle Pin This is the HK factory German stock pin that allows you to attach the stock to either the factory receiver of a UMP or for those that are doing the USC to UMP conversion. This is required to attach the stock to the...HKP-00604$30.95 -
HK MP5, MP5K, HK93, HK91 Sight Clamping Screw - Rear Retainer
H&K Heckler & Koch
$4.95HK German Rear Sight Retainer / Clamping ScrewHKP-00868$4.95 -
HK MP5, HK90 Series Hammer - Full Auto - Used
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. This hammer is the hammer that is most commonly used in semi auto trigger packs as the secondary sear catch is...HKP-21442$29.95 -
HK MP5SD Barrel Brush Cleaning Tool
HiTec Arms
$119.95HiTec Arms barrel tool for cleaning your HK MP5SD Barrel cleaning brush tool for integrally suppressed ported barrels. This is a good tool to have on hand for any MP5SD owner to clean carbon build up and avoid your suppressor seizing on your barrel. Made...HKP-21347-M$119.95 -
HK VP9 Magazine Floorplate - 17 Round - Rubberized
H&K Heckler & Koch
$8.95Rubberized Floor Plate - 17 Round Magazine - HK VP9 HK German rubberized factory floor plate. This was made to be used specifically for the New VP9 17 Round Magazine.HKP-19321$8.95 -
HK91, G3, HK93, HK33, PTR Buffer - Enhanced
HKP HK Parts
$129.95HKP Enhanced Buffer This buffer is the factory correct style PSG1 & MSG90 stock buffer found in all factory HK PSG1, MSG90 German stocks. The overall diameter is .80" Compatible With: HK 91 G3, 93, 33, or PTR stock.HKP-01014$129.95 -
HK MP5, MP5SD Cocking Tube Support - Universal - Steel
HKP HK Parts
$64.95MP5SD, MP5 Universal All Steel Cocking Tube Support 9mm - USA Made from ordnance grade stainless steel from the factory HK German print & specs. An HK German quality part at a great price point. Each MP5 9mm cocking tube support will include the...HKP-18089$64.95 -
HK MP5 Mount - Trijicon MRO - Ultra Low Profile - Battle Steel
Botach Tactical
$69.95Botach Battle Steel HK Ultra-Low Profile Integrated Mounting Platforms for the Trijicon MRO Ultra-low-profile mount for HK MP5/HK33/HK53 firearms. Features a lower 1/3 cowitness for the Trijicon MRO sights. Compatible With: HK MP5 &...HKP-19530$69.95