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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HK51, PTR PDW Stock - Fixed
PTR
$299.95HK91 and PTR PDW (7.62x39) & (7.62x51/.308) Fixed Stock Each stock is constructed of new U.S. & German HK parts. This stock also counts as one U.S. 922r compliant part. Perfect for those that have registered sears or want to SBR your PDW pistol...HKP-02408$299.95 -
HK91, G3 Complete F/A Bolt Group - Used
H&K Heckler & Koch
$259.95HK Factory German G3, 91, PTR F/A Bolt Group - Complete Used Everything you need as a spare or a direct replacement of your existing bolt group. This bolt group is a direct replacement of all HK G3, HK91, SAR3/8, PTR-91, C91, Clones, Etc. Bolt...HKP-00356$259.95 -
MP5, SP5 - A2 Fixed Stock-Green
Michaels Machines
$199.95MP5 A2 Fixed Stock - USA - OD GREEN Each stock counts as one US made 922r compliant part. Simply the best US made MP5 stock featuring a rubberized backplate that reduces felt recoil as well as carrier abuse. Ideal for use with +P ammunition or MP5 40/10...HKP-18804$199.95 -
HK G36 30 Round Magazine w/o Retainers
H&K Heckler & Koch
$54.95H&K G36 30 Round Magazine w/o Retainers Genuine H&K 30-round magazine without magazine interlocking retainers. Compatible With: HK G36HKP-22195$54.95 -
HK53 Bolt Carrier - Full Auto - RCM
RCM
$359.95RCM HK53 Full Auto Bolt Carrier US manufactured new-style HK53 factory bolt carrier. The finest HK53 carrier ever made with the latest & greatest German inspired improvements and updates. Ideal for 556/.223 & .300 BLK firearms. This US...HKP-20538$359.95 -
HK MP5K 9mm SEF Navy Style Trigger Housing - Clipped & Pinned - USED
H&K Heckler & Koch
$99.95H&K MP5K 9mm SEF Navy Style Trigger Housing - Clipped & Pinned - USED In used but good condition. Each German HK housing will have some handling marks, nicks and dings. Each housing is in perfectly useable condition and each unit has been clipped...HKP-19850$99.95 -
HK45 Thread Protector - .578x28 RH
HKP HK Parts
$19.95HKP HK45 .45 ACP Thread Protector - Threaded .578x28 RH U.S.-made titanium thread protector designed for .45 ACP barrels threaded .578x28 right-hand. Features a fully hooded profile that extends over the muzzle to protect exposed threads and the barrel...HKP-19514$19.95 -
HK VP9, VP9SK, VP40 Elbow Spring, Drop Safety
H&K Heckler & Koch
$6.95H&K HK VP9/VP9SK, VP40 Drop Safety Elbow Spring Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40HKP-16835$6.95 -
HK P30, HK45, USPC Recoil Spring
H&K Heckler & Koch
$18.95New HK German Pistol Recoil Spring This part is ideal for repair or a replacement item as this is a high-wear item. This spring is the factory-correct flat-style compression spring. Compatible With: HK 45C, HK45C Tactical HK USPC .45, USPC Tactical HK...HKP-01673$18.95 -
Out Of Stock
HK416, MR556 Magazine Release Button
H&K Heckler & Koch
$16.95H&K HK MR556/416 Magazine Release Button New HK German Manufacture. Compatible With: HK MR556 HK416 AR15, M4 & M16 firearmsHKP-02656$16.95 -
HK MP5K, SP89, SP5K End Cap with Sling Swivel - 9mm - H&K
H&K Heckler & Koch
$99.95HK Factory German MP5K, SP-89, & SP5K End Cap With Sling Swivel Each pistol end cap is OEM HK German MP5K and MP5K-N and has the HK German factory buffer. Compatible With: MP5K SP89 SP5K MP5K-N MP5K-PDW MP5K Clone Or Other Custom BuildsHKP-00394$99.95 -
HK91, G3 Enhanced Extractor
H&K Heckler & Koch
$18.95HK German HK G3, HK, 91 & PTR 91 .308 Enhanced Extractor New HK German extractors! We have a limited supply of top-notch new old stock extractors available at unbeatable prices. Each extractor features a micro-polished face for enhanced reliability...HKP-22070$18.95