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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Out Of Stock
HK UMP Lower Backplate
H&K Heckler & Koch
$34.95HK Heckler and Koch .40 S&W, .45 ACP, 9mm Lower Backplate for HK UMP HK German Backplate for all UMP lowers. You will need to add your existing buffer or order one to make a complete buffer assembly.HKP-16473$34.95 -
HK UMP Lower - Navy 3 Position 0,1,Full
H&K Heckler & Koch
$1,249.95HK Heckler and Koch 3 Position Navy Lower for HK UMP New German Heckler & Koch UMP 3 position (0, 1, full) Navy lower. Each lower comes complete with all the factory internals. These lowers are ideal...HKP-00592$1,249.95 -
HK91, G3 Rifle Length Handguard - Keymod
AIM
$89.95HK 91, G3, PTR RIFLE LENGTH HANDGUARD - KEY MOD This sleek streamlined design is an ultra low profile handguard with generous mounting space to accept all KeyMod accessories. Superior ergonomics and...HKP-18179$89.95 -
HK MP5K, HK90 Series Burst Trigger Sear Complete
H&K Heckler & Koch
$59.95Heckler & Koch's Sear Catch for HK90 Series and HK MP5K - Steel - German For Burst Trigger Packs Compatible With: 0,1,3,F 0,1,2,F 0,1,3HKP-17028$59.95 -
HK MP5, HK33, HK53, HK93 Grip Frame Housing - 2 Position S,F,Pictogram - Clipped and Pinned - 9mm, 5.56 / .223
PTR
$99.95PTR HK MP5 & 93/53/33 (9mm & 5.56/.223) 2 Position (S,F Pictogram) Grip Frame Housing - Clipped & Pinned This is made by PTR-91 to exact HK specs. These housings come clipped and ready for the...HKP-00840$99.95 -
HK416, MR556 Buffer Tube - Enhanced - Commercial
H&K Heckler & Koch
$249.95HK 416, MR556 OTB (over the beach) Buffer Tube, Receiver Extension - Commercial: Genuine HK German manufactured 416, MR556 new style latest generation marine environment & over the beach buffer tube...HKP-15424$249.95 -
HK MP5, SP5, MP5K, SP5K Cocking Handle - Skeletonized
HKP HK Parts
$48.95HKP HK MP5, MP5K Skeletonized Cocking Handle HKP skeletonized cocking handle for HK MP5 and MP5K pattern firearms. The knurled profile provides increased surface area for improved charging control...HKP-22865$48.95 -
HK MP5, G3, MKE AP5 Elbow Spring with Roller - Full-Auto
MKE
$4.95MKE AP5, HK MP5, G3 Full-Auto Elbow Spring with Roller This elbow spring is manufactured by MKE from steel and is used in MP5 and G3 pattern trigger packs. It provides proper tension and function for...HKP-22489$4.95 -
On Sale
CZ Scorpion Binary Trigger - Curved - BFSIII - BLEMISHED
FA Franklin Armory
Now: $262.49Was: $495.95Franklin Armory CZ Scorpion - BFSIII - Binary Trigger - Curved - BLEMISHED DAMAGED PACKAGING - PRODUCT UNAFFECTED COSMETICALLY BLEMISHED PARTS AHKP-18881-BNow: $262.49Was: $495.95 -
HK416, MR556 Flash Hider - ROTEX IIA - Threaded M15x1
B&T Brugger & Thomet
$119.95B&T Brugger and Thomet's Flash Hider for your HK416, HK33, HK53, and HK93. Swiss-made B&T flash hider for all 5.56 / .223 firearms threaded in M15x1. Features a precision machined interface for...HKP-22215$119.95 -
HK VP9SK, P30SK Magazine Floorplate Extension - Locking
H&K Heckler & Koch
$23.00H&K VP9SK/P30SK Magazine Extension Locking Floorplate Secures the extension to the magazine body on P30SK and VP9SK magazine extensions. Compatible With: HK VP9SK/P30SKHKP-21993$23.00 -
On Sale
HK91, G3, PTR Bolt Head Complete - Used
H&K Heckler & Koch
Now: $59.21Was: $99.95German HK G3 & HK 91 & PTR Bolt Head Complete - Used German Date Coded Made in Germany. Each used bolt head is complete with all parts installed & 100% functional. Taken from live demilled German HK...HKP-21902Now: $59.21Was: $99.95