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 Gas Block - Vented
H&K Heckler & Koch
$249.95Heckler and Koch German HK416 and HK MR556 14.5" & 16.5" & 20" Gas Block CompleteHKP-01544$249.95 -
On Sale
HK G36 Bolt Carrier
GSG9
Now: $447.26Was: $496.95HK G36 Bolt Carrier with Handle Compatible With: G36 G36K G36C Will NOT work with a HK SL8HKP-18984Now: $447.26Was: $496.95 -
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: $101.97Was: $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...HKP-02613Now: $101.97Was: $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:HKP-18751$369.95 -
On Sale
HK23E Locking Piece #20 - 70 Degree
RCM
Now: $37.46Was: $49.95New US-Made #20 Locking Piece - 70 Degree For HK23E New US-manufactured RCM # 20 70-degree locking piece for HK23E and other custom builds. Made from the finest ordnance grade steel and heat treated...HKP-02525Now: $37.46Was: $49.95 -
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...HKP-00930$354.95 -
On Sale
HK33, HK93 Handguard - Key Mod
HKP HK Parts
Now: $82.84Was: $129.95HK93, 33 & PTR Low Profile Key Mod Forearm The KeyMod tactical hand guard easily installs on your firearm with minimal effort and locks up solid. No fitting required. Designed from the ground up by...HKP-17179Now: $82.84Was: $129.95 -
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...HKP-01513$0.00 -
HK MP5K, SP5K, SP89 Trigger Group - 3 Position Semi-Auto - Clipped and Pinned
H&K Heckler & Koch
$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...HKP-00186$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...HKP-16057$244.95 -
HK MP5F, MP5 40, 10 Cocking Handle
H&K Heckler & Koch
$85.99H&K MP5F & MP5 40/10mm Cocking Handle New HK German factory correct cocking handle. Each unit is to be used with the correct 40/10 or F-style cocking handle support and cocking tube. Compatible With:HKP-00098$85.99