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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HK416, MR556, HK417, MR762 Brass Catcher
H&K Heckler & Koch
$595.95HK 416, MR556 Brass Catcher The HK factory German brass catcher attaches quickly to firearms featuring a factory spec. Picatinny tri or quad rail. Designed specifically for HK firearms with factory spec Picatinny quad rail handguards but will also...HKP-18046$595.95 -
HK MR556 Bolt Head, Complete
H&K Heckler & Koch
$384.95H&K HK MR556 A1 Complete Bolt Head Brand new factory German bolt head with all the components to make the bolt head complete. Compatible With: HK MR556 A1/A4HKP-02712$384.95 -
HK416 Gas Block - Vented
H&K Heckler & Koch
$249.95Heckler and Koch German HK416 and HK MR556 14.5" & 16.5" & 20" Gas Block Complete This is the factory-correct gas block with the ambi sling attachment points, as well as the bayonet lug milled into the gas block. Perfect for those who want...HKP-01544$249.95 -
HK G36 Disconnector Spring - 2 Round Burst
H&K Heckler & Koch
$9.95HK German G36 2 Round Burst Disconnector Spring For All HK Burst G36 Burst LowersHKP-12703$9.95 -
On Sale
HK UMP, USC Stock Block C
HDPS
Now: $143.95Was: $159.95HDPS HK UMP & USC Stock Block C Each unit comes with a new push-pin design. This is the part to use with the ACE hinge part number FSM-TB (push button folding stock) and non-folding push bottom (pig nose). This is just...HKP-02613Now: $143.95Was: $159.95 -
Out Of Stock
HK UMP45 Bolt Group
$369.95HK UMP .45 Tungsten Filled Semi Auto Bolt Group Complete. The semi auto bolt group is required for HK USC to HK UMP caliber conversions. Comes complete less the recoil assembly. Specifications: Tungsten filled Heat treated ParkerizedHKP-18751$369.95 -
HK91, G3 Navy Style Trigger Group (SEF) - Used Good
H&K Heckler & Koch
$354.95H&K 91/G3 (7.62x51/.308) Navy Style Trigger Group (SEF) - Used Good These are pulled from German military HK G3 rifles. These work great as spares or for collectible items. These are used but in good shape overall. Includes: SEF Black Polymer...HKP-00930$354.95 -
On Sale
HK91, G3 Trigger Group - 4 Position 0,1,3,F - Safe Semi Only
H&K Heckler & Koch
Now: $1,234.95Was: $1,999.95HK G3 & HK 91 4 Position (0,1,3, F) Burst Trigger Group Complete - New Factory German The look and feel of the original 4-position, push-pin trigger group but with a semi-auto trigger pack. This clipped and pinned housing is drop-in ready and a great...HKP-01663Now: $1,234.95Was: $1,999.95 -
HK33, HK53, HK93 Trigger Pack - 0,1 - Ambidextrous
HKP HK Parts
$379.95HKP HK 93/53/33 (5.56 / .223) Ambidextrous 0,1 Trigger Pack A lower cost alternative to the spendy and hard to find all German HK FBI or 0,1 ambi trigger packs. Now for the first time, we have the popular trigger pack available in an all-German & US...HKP-17233$379.95 -
Out Of Stock
HK MP5K Trigger Group - FA SEF - Contoured - Push Pin - 9mm
H&K Heckler & Koch
$0.00HK German MP5K SEF Trigger Group SEF Marked. The trigger housing has contoured finger grooves for ultimate comfort. This is a factory push pin full-auto trigger pack assembly setup for 9mm MP5K or PDW sub guns. Assembled from a factory German HK using a...HKP-01513$0.00 -
On Sale
HK MP5K, SP5K, SP89 Trigger Group - 3 Position Semi-Auto - Clipped and Pinned
H&K Heckler & Koch
Now: $1,289.95Was: $1,899.95Heckler and Koch MP5K, SP5K Semi Auto 3 Position Trigger Group - Clipped and Pinned Semi-automatic trigger group configured in a 3-position clipped and pinned housing. Provides the appearance of a factory 3-position configuration while retaining a...HKP-00186Now: $1,289.95Was: $1,899.95 -
Out Of Stock
HK MP5K Trigger Housing - FBI 2 Position 0,1 Pictogram - Push Pin
H&K Heckler & Koch
$244.95H&K MP5K 9mm 2 Position (0,1 Pictogram) FBI Style Trigger Housing - Push Pin This HK German MP5K FBI style (0,1) trigger housing is designed for push pin type receivers. It is compatible with all HK German ambidextrous trigger packs and ambidextrous...HKP-16057$244.95