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 G36, SL8 Optic Mount with Emergency Sights
B&T Brugger & Thomet
$296.95B&T Long Mounting Rail NAR for HK G36/G36K, with Emergency Sight Specifications: Color: Black Height max: 41.5 mm Length max: 483.2 mm Length of top rail: 306 mm + 113 mm Material: Aluminum & steel NATO Accessory Rails: 2 Part number:...HKP-16874$296.95 -
Out Of Stock
HK UMP Birdcage Flash Hider
HDPS
$154.95HDPS HK UMP (.40 S&W/.45 ACP) Birdcage Flash Hider This part is made to fit all US-made or German HK-flanged style barrels. HK no longer makes a flash hider for the UMP Subgun. This is the much anticipated HDPS bird cage style UMP...HKP-02694$154.95 -
HK UMP, USC, G36, SL8 Rear Sight Support
H&K Heckler & Koch
$19.95H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Rear Sight SupportHKP-16362$19.95 -
Out Of StockOn Sale
HK UMP Barrel - .40 S&W - Used
H&K Heckler & Koch
Now: $299.95Was: $499.95Heckler and Koch Ump Barrel made in Germany These are police department trade-in barrels in good shape and perfectly usable.HKP-00600Now: $299.95Was: $499.95 -
On Sale
HK UMP Bolt Group - .40 S&W - Used
H&K Heckler & Koch
Now: $477.95Was: $649.95German UMP .40 factory F/A Bolt Group - Complete This item is used in very good shape.HKP-00601Now: $477.95Was: $649.95 -
Out Of Stock
$4.95 -
HK PSG1, MSG90 Ejector Lever
H&K Heckler & Koch
$79.95Heckler and Koch Ejector Lever for HK PSG1, MSG90 German-made ejector lever for PSG1 and MSG90 platforms. Direct replacement part built to original factory-spec for reliable extraction and correct bolt head function. Compatible With: PSG1, MSG90HKP-00537$79.95 -
Out Of Stock
HK MSG90 Optic Mount - Extended 340mm - Picatinny Rail
B&T Brugger & Thomet
$299.95Extended B&T Mounting Rail for HK MSG90 with Support for Brass Catcher This is the finest MSG90 scope/brass catcher mount available! Specifications: Color: Black Height max: 22.5 mm Length max: 340 mm Length of top rail: 332.5 mm Material: Aluminum...HKP-17285$299.95 -
HK91, G3 Firing Pin - Titanium
HKP HK Parts
$34.95HK G3, 91 & PTR Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK G3, 91 & PTR weapon system. Get the...HKP-17937$34.95 -
HK91, G3, PTR Magazine - 5 Round - Steel
H&K Heckler & Koch
$174.95New HK German 5 Round Factory G3 and HK91 .308 Steel Magazine Factory German steel magazine. This is an original German 5 round magazine from HK, not a modified assembly/cut-down magazine. These mags are long out of production and only a...HKP-00220$174.95 -
HK53 Cocking Tube - Left Hand
HKP HK Parts
$99.95HK53 Length Cocking Tube - For Left Handed Shooters New HK53, HK51 cocking tube made in the US. Made to the exact HK specifications as the factory HK53 German cocking tube. This is the only factory correct HK53 cocking tube available as HK Germany does...HKP-19028$99.95 -
HK MP5 Bolt Carrier - Full Auto - .40 S&W / 10mm - USA
HKP HK Parts
$149.95HKP MP5 40/10 Full Auto Bolt Carrier Machined completely from billet ordnance steel and black oxide finished. This carrier is made to the latest specs, tungsten filled, and heat treated. Made in the USA and available exclusively at HK Parts...HKP-18363$149.95