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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HK91, G3, PTR Magazine - 20 Round - Alloy - Like New
Rheinmetall
$19.95Rheinmetall HK G3, HK91, and PTR91 20 Round Magazine - Like New Rheinmetall G3 alloy mags were made for the German Army and are no longer in production. Once they are gone, they are gone for good. *Although these magazines have been carefully selected,...HKP-22495$19.95 -
HK MP5, MP5K Binary Selector Set - Ambi Housing - Skeletonized - HK
HKP HK Parts
$79.95HKP/H&K MP5, MP5K 9mm Selector Lever Set For Franklin Armory BFSIII HK Binary Trigger Pack - Skeletonized Aluminum The HKP skeletonized aluminum selector lever set was modeled after the HK ambi style selector lever and modified for a cleaner...HKP-20470-M$79.95 -
On Sale
HK Linear Compensator - Threaded 5/8x24 RH - 5.56 and .308
HKP HK Parts
Now: $87.95Was: $149.95HKP (5.56/.223) and (7.62x51/.308) Linear Compensator - Threaded 5/8x24 RH Linear compensators give you the best of both worlds. Remove the outer blast shield for standard compensator and muzzle break functionality. Or, keep it on as a courtesy to the...HKP-19338Now: $87.95Was: $149.95 -
HK VP9 Series Magazine Catch
H&K Heckler & Koch
$24.95Heckler and Koch Magazine Catch for HK VP9 and HK VP40 New HK German manufacture. Compatible With: VP9 VP9SK VP9 Tactical VP9 Match VP40 VP40 TacticalHKP-16817$24.95 -
Out Of Stock
HK VP Series F2 Trigger - Flat Face - Red
Lazy Wolf
$134.95Lazy Wolf F2 Flat Face Trigger for the Heckler and Koch HK VP Series In a collaboration with Lazy Wolf Guns, HK Parts is offering aftermarket triggers for your HK VP9 and HK VP40 handguns. The drop in VP9 series is the greatest trigger ever...HKP-18878$134.95 -
Out Of StockOn Sale
HK VP9 Micro Comp - Threaded 1/2x28
HKP HK Parts
Now: $39.95Was: $49.95HKP 9mm Micro Comp - Threaded 1/2x28 RH Enhance your 9mm pistol with this precision-engineered Micro Compensator. Threaded 1/2x28, this micro comp is designed to reduce recoil and muzzle rise, improving your shooting accuracy and control. Its...HKP-18029Now: $39.95Was: $49.95 -
HK416, MR556 Bolt Catch
H&K Heckler & Koch
$59.95Heckler and Koch HK MR556 and HK416 Bolt Catch New HK German manufacture. Compatible With: HK416, MR556HKP-02542$59.95 -
HK G36C, G36K Gas Piston - US
GSG9
$74.95GSG9 complete gas piston for HK G36C and G36K - US made This is a popular part for those upgrading to an HK SL8 to HK G36K or HK36C barrel length. Each piston counts as one 922r compliant part. Made in the USA. Features: New USA manufactured gas piston...HKP-18253$74.95 -
HK UMP Magazine Spring - .40 S&W - 30 Round
H&K Heckler & Koch
$8.95HK UMP .40 30 Round Magazine Spring Perfect for spares and to have on hand as these are consumable high-wear items. Compatible With: HK UMP .40HKP-02742$8.95 -
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 -
HK MP5 Recoil Spring - Enhanced
HKP HK Parts
$16.95HKP HK MP5 Enhanced Recoil Spring The HK Parts enhanced recoil spring offers a 5% increase in strength over the factory MP5 spring. Ideal for high round count firearms, suppressed setups, or simply to improve longevity. Won't fit F style recoil rods or...HKP-22209$16.95 -
Binary Safety Selector Set - Ambidextrous - Extended
HKP HK Parts
$89.95HKP Ambi ESSL Housing Franklin Armory Binary Selector Set - Levers Only HK Parts extended safety selector Selector Lever Set, expertly modeled after the HK Ambi Style Selector Lever. This premium product is designed to integrate seamlessly with the...HKP-21616-M$89.95