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 SL8 Trigger Return Elbow Spring
H&K Heckler & Koch
$9.99HK SL8 Trigger Return Elbow Spring This is the lighter spring weight found only in the SL8 firearms. The G36 trigger return spring is much heavier in weight and thus has a heavier trigger pull over the SL8 trigger pull.HKP-16391$9.99 -
HK G36K Handguard
GSG9
$120.95GSG9 Handguard with Hand Stop and Heat Shield for HK G36K HK G36K length latest production HK G36K handguard with built in heat shield. Each unit features a built in hand stop with sling attachment points. Built in hard mounting points for adding...HKP-18217$120.95 -
B&T APC Brass Catcher - Quick Detach - 9mm, .40 S&W, .45 ACP
B&T Brugger & Thomet
$165.00B&T APC9, APC10, APC45 Quick Detach Brass Catcher Swiss made brass catcher for B&T APC9, APC10 and APC45 firearms. Quickly and easily attaches and detaches to the right-side picatinny rail section. Made to collect the fired brass...HKP-18106$165.00 -
HK VP9SK, VP40SK Backstrap - Small - Gray
H&K Heckler & Koch
$29.95H&K VP9SK, VP40SK Backstrap - Small - Gray New HK German manufacture. Compatible With: HK VP9SK HK VP40SKHKP-18969$29.95 -
Out Of Stock
SOCOM Flash Hider - 7.62x51 / .308 - 3 Prong - Threaded 5/8x24
Surefire
$159.95Surefire (7.62x.308) SOCOM 3-Prong Flash Hider - Threaded 5/8x24 The SureFire three-prong flash hider is designed for Armalite AR-10, DPMS LR308, and other 7.62 rifles with 5/8x24 muzzle threads. Its patent-pending design reduces muzzle flash by over...HKP-19992$159.95 -
HK MP5K, SP89, Z-5P, Z-5K M4 Telescopic Stock
Choate
$239.95Choate M4 Telescopic Stock HK MP5K, SP89 and Zenith Models Z-5P, Z-5K The telescopic stock for the H&K MP5K and SP89 and Zenith Firearms models Z-5P and Z-5K replaces the existing stock and gives the shooter the ability to change the...HKP-19893$239.95 -
Swiss Military Single Point Sling - OD Green - Used
Other
$34.95Swiss Military Single Point Sling in OD Green - USEDHKP-19794$34.95 -
HK USC, UMP Optic Rail - Receiver - Polymer
H&K Heckler & Koch
$116.95H&K HK USC, UMP German Polymer Receiver Optic Rail German HK USC, UMP polymer top Receiver Rail with mounting hardware. Includes: Factory HK rail 2 mounting screws Compatible With: HK German spec UMP USC upper receiversHKP-19616$116.95 -
On Sale
HK MP5 Parts Kit - 9mm
Now: $1,449.99Was: $1,929.95HK German MP5 made with Swiss Marked & Proofed HK MP5 Parts Kit Includes: German demilled HK front sight tower assembly and sling loop German HK cocking tube assembly complete German HK trunnion with magwell section attached to the demilled...HKP-19477Now: $1,449.99Was: $1,929.95 -
Out Of Stock
HK VP9 Holster - Infidel Ultra Max - RH
Comp-Tac
$96.95HK VP9 Infidel Ultra Max Holster - Right Hand The Infidel Ultra Max Holster is an Inside the Waistband Kydex and leather hybrid holster designed for concealed carry. Created to be worn behind the hip at 4:00 or 5:00, this holster is a perfect easy on...HKP-17488$96.95 -
HK VP9, VP40 Backstrap - Medium - OD Green
H&K Heckler & Koch
$29.95H&K VP9, VP40 Backstrap - Medium - OD Green New HK German manufactured Compatible With: HK VP9 HK VP40 HK VP9A1 F HK VP9A1 KHKP-18838$29.95 -
HK45, HK45 Tactical Magazine Housing - 10 Round
H&K Heckler & Koch
$34.95HK45 Magazine Housing For 10 Round Mag - Mag Body Only Brand new factory German manufacture. Compatible With: HK45, HK45 Tactical Please Note: This is not the same as the USP45 mag body.HKP-02494$34.95