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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HK21E Cartridge Guide
H&K Heckler & Koch
$1,985.95HK German 21E Cartridge Guide - Complete New old stock HK German .308 HK21E feed mech cartridge guide.HKP-02431$1,985.95 -
Out Of Stock
HK PSG1, MSG90 Bolt Carrier
H&K Heckler & Koch
$999.95HK German MSG90/PSG1 Bolt Carrier. Rare and hard to find. Now restricted by HK and will only become harder to find.HKP-00538$999.95 -
Out Of Stock
HK G3K, 51 Rear Sight Drum - 7.62 / .308
H&K Heckler & Koch
$104.95HK German G3K, HK51, SL6, & SL7 Rear Sight Drum Hard to find and no longer made or imported. Compatible With: G3KHKP-02049$104.95 -
Out Of Stock
HK33, HK53, HK93, HK91, G3 1200 Meter Rear Sight - 3rd Generation
H&K Heckler & Koch
$0.00HK German 3rd Gen 1200 Meter Rear Sight. New HK German Manufacture. No longer in productionHKP-00561$0.00 -
Out Of Stock
HK33, HK53, HK93 Trigger Group, Complete - 4 Position 0,1,3,F - Used
H&K Heckler & Koch
$2,645.95Heckler and Koch Used 4 Position Trigger Group Complete (0,1,3,F) for HK33, HK53, HK93 Factory German Push Pin HK Trigger Group.HKP-02065$2,645.95 -
Out Of Stock
HK33, HK53, HK93 Rear Receiver Section
H&K Heckler & Koch
$79.95H&K 93/53/33 (5.56/.223) Rear Receiver Section Each rear receiver section is from a factory German HK 33/53 that was demilled and includes the welded on rear sight base and push pin bushing intact.HKP-16481$79.95 -
HK53K Barrel - 5.56 / .223 - 5.3" - Threaded 15x1 RH
RCM
$164.95RCM HK53K (5.56/.223) Barrel - Threaded 15x1 RH US made 922r compliant HK53K barrel. Specifications: Made In The USAHKP-02400$164.95 -
HK MP5K Trigger Housing - 4 Position 0,1,3,F - Clipped and Pinned - .40 S&W, 10mm
H&K Heckler & Koch
$374.95Heckler and Koch HK MP5 40/10 4 Position (0,1,3,F Pictogram) Trigger Housing - Clipped and Pinned This H&K MP5 40/10 trigger housing features a 4 position pictogram (0,1,3,F) and a bolt hold open...HKP-02414$374.95 -
Out Of Stock
HK MP5 Trigger Pack, Complete - Ambi Navy -.40 S&W, 10mm
H&K Heckler & Koch
$0.00H&K MP5 40/10 3 Position Ambidextrous Navy Style Complete Trigger PackHKP-00980$0.00 -
Out Of Stock
HK MP5K Burst Trigger Group -3 Position S,E,3F - Push Pin - 9mm
H&K Heckler & Koch
$0.00Trigger Group (S,E,3F) - HK MP5K 9mmHKP-02019$0.00 -
Out Of Stock
HK MP5 Trigger Group - 0,1,3 Pictogram - 9mm
H&K Heckler & Koch
$0.00HK MP5 9mm (0,1,3) Only Pictogram Black Polymer Trigger Group. Rare configuration and hard to find.HKP-02018$0.00 -
Out Of Stock
HK MP5, MP5K Ambidextrous 0,1 Trigger Pack - 9mm
H&K Heckler & Koch
$0.00H&K MP5/K 9mm 2 Position 0,1 Ambidextrous Trigger Pack Introducing the popular FBI or 0,1 style ambidextrous trigger pack, now available in a fully German-manufactured configuration. This trigger...HKP-18209$0.00