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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Out Of Stock
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 -
HK UMP, USC Stock Block C
HDPS
$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-02613$159.95 -
HK USC to UMP Conversion ACR Stock Block
USA
$139.95HK USC To ACR Stock Adapter A new product that allows you to add the widely popular Remington ACR folding, adjustable stock to your USC-UMP conversion. This offering is for the stock block and hardware to attach your ACR stock for your HK USC when doing...HKP-17357$139.95 -
HK USC, SL8 Hammer
H&K Heckler & Koch
$98.95H&K USC/SL8 (.45 ACP/5.56/.223) Hammer Compatible With: HK USC .45 ACP HK SL8 .223/5.56HKP-16352$98.95 -
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 -
HK23E Recoil Spring - 5.56/.223
H&K Heckler & Koch
$79.95New German HK Factory HK23E Recoil SpringHKP-02001$79.95 -
HK91, G3 Ambidextrous Trigger Pack (0,1) - Match Trigger
HKP HK Parts
$474.95HKP/H&K G3/91 (7.62x51/.308) 2 Position 0,1 Ambidextrous Match Trigger Pack Complete with custom trigger conversion to achieve a light target trigger with an ultra-smooth pull. This HK German semi-auto trigger pack has been enhanced by...hkp-18425$474.95 -
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 -
HK MP5SD Locking Piece - 110 Degree - .40 S&W, 10mm
HKP HK Parts
$49.95MP5 40 & MP5 10mm SD 110 Degree Locking Piece - USA Made in the USA from an enhanced material and heat treated to factory specifications. Each US made MP5 40/10 SD 110 degree locking price is designed for use with the MP5 40/10 SD variants...HKP-18274$49.95 -
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 -
HK MP5K, SP89 Bolt Carrier - Full Auto - 9mm
H&K Heckler & Koch
$1,949.95HK German MP5K Full Auto Bolt Carrier - Latest Style Contour Each bolt carrier is designed to fit all HK MP5K's, SP89, and K-style clones seamlessly. Crafted from the latest tungsten-filled HK German production, these are the final units available,...HKP-00385$1,949.95