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 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
HK91, G3 Barrel - 7.62 / .308 - 18" - Threaded 15x1 - Match
PTR
$199.95PTR HK G3/91 (7.62x51/.308) Match Grade Barrel - Threaded 15x1 Each barrel is current PTR production and has the proper number and depth of flutes for optimum functionality. This barrel is a medium contour barrel that is larger in diameter than a...HKP-00873$199.95 -
Out Of Stock
HK PSG1, MSG90 Handguard
H&K Heckler & Koch
$0.00HK German PSG1, MSG90 Forearm New HK German & Hard To Find. Perfect For The PSG1, MSG90 Conversions. We have many other PSG1 items available such as the PSG1 cocking tube, trigger group, stock etc.The PSG1 forearm will only work with the addition of...HKP-00529$0.00 -
Out Of Stock
HK MSG90 Trigger Housing - 2 Position 0,1 Pictogram - Clipped and Pinned
H&K Heckler & Koch
$0.00H&K MSG90 (7.62x.51/.308) 2 Position (0,1 Pictogram) Trigger Housing - Clipped & Pinned This clipped and pinned semi-auto trigger housing is designed for the MSG-90 rifle. It is compatible with 2-position 0,1 semi-auto style trigger packs,...HKP-00539$0.00 -
HK91, G3 Caliber Conversion Kit - .22LR - USED
H&K Heckler & Koch
$1,497.95Heckler and Koch HK G3, HK91 .22LR Caliber Conversion Kit - USED SOLD AS IS. NO RETURNS. Convert any HK91 or HK G3 rifle to cycle .22LR ammunition with this genuine HK caliber conversion kit. This kit is intended for marksmanship training and...HKP-01147$1,497.95 -
HK33, HK93, PSG1 Match Barrel - 5.56 / .223 - 26"- MSG90 Style
HKP HK Parts
$499.95HK PSG-1, MSG-90 Style 5.56, .223 HK 93, HK 33 Match Barrel: This is the finest PSG1 barrel you can get for your custom HK93, SG1, PSG1 style build in 5.56. Built on trusted tooling to HK specifications. Perfect for that custom build or the for the...HKP-17008$499.95 -
On Sale
HK MP5, HK94, HK33, HK53, HK93 Stock - AR15 Style
HKP HK Parts
Now: $157.95Was: $197.95HKP HK Parts AR-15 Style Magpul Stock for HK33, HK53, and HK93 - 5.56 / .223 US manufactured AR15 to HK33, HK53, HK93 series stock assembly with Magpul MOE stock. Each unit comes complete and ready to install on your HK33, HK53, HK93 or HK94, MP5...HKP-16271Now: $157.95Was: $197.95 -
Out Of Stock
HK MP5 Trigger Group - 2 Position 0,1 Safe Semi Only - Clipped and Pinned - .40 S&W, 10mm
HKP HK Parts
$529.95MP5 40/10 Trigger Group 2 Position Housing 0,1- Safe, Semi Only Finally a lower cost alternative to the spendy & rare all-German HK FBI or 0,1 ambidextrous trigger group in a 2 position factory German HK housing. Each trigger group features a...HKP-17248$529.95 -
Out Of Stock
HK MP5 Trigger Housing - 4 Position 0,1,3,F Pictogram - Clipped and Pinned - .40 S&W, 10mm
H&K Heckler & Koch
$0.00H&K MP5 40/10 4 Position (0,1,3,F Pictogram) Trigger Housing - Clipped & Pinned This trigger housing features (0,1,3,F) pictogram markings and is specifically designed for the HK MP5 40/10 series. The housing is already clipped and pinned for...HKP-02129$0.00 -
On Sale
HK MP5 Bolt Carrier - Full Auto - .40 S&W, 10mm - USA
HKP HK Parts
Now: $119.95Was: $149.95HKP MP5.40 S&W, 10mm 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...HKP-18363Now: $119.95Was: $149.95 -
HK MP5K Trigger Group - Ambi Navy 3 Position 0,1,F
H&K Heckler & Koch
$2,499.95HK MP5K 3 Position (0,1,F) Navy Ambidextrous Trigger Group HK German MP5K 3 Position 0,1,F Navy Ambidextrous Trigger Group For MP5K, MP5KN or MP5K PDW. New HK German manufacture. This is the real deal. Only a few on hand and once they are all gone there...HKP-00405$2,499.95 -
HK MP5 A3 Retractable Buttstock Release Lever
H&K Heckler & Koch
$19.95HK MP5 A3 Retractable Buttstock Release Lever For use with the newer Navy or F style A3 retractable MP5 stocks. Not for use on the older 1st generation metal levered MP5 stocks. This lever is much easier to break than the older style and a must have item...HKP-16404$19.95