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 Bolt Carrier
GSG9
$496.95HK G36 Bolt Carrier with Handle Compatible With: G36 G36K G36C Will NOT work with a HK SL8HKP-18984$496.95 -
Out Of Stock
HK G36 Carrying Handle, Incomplete - 3X Single Optic
H&K Heckler & Koch
$695.99H&K HK G36 Complete 3X Single Optic Carrying Handle Brand new. Mounting hardware offered separately.HKP-16388$695.99 -
HK G36K Handguard - Extended - Picatinny Rail
H&K Heckler & Koch
$149.95HK G36K German Factory Picatinny Extended Bottom Rail Fits all HK G36K newer style handguards with the rail attachment points. This is the full-length version for a full-length bottom rail for the G36K forearm. New HK German manufacture.HKP-01137$149.95 -
HK UMP Flash Hider - 5 Prong - 10mm, .40 S&W, .45 ACP
HDPS
$159.95HK UMP Flash Hider - 5 Prong - 10mm, .40, .45 Designed to fit flanged UMP barrels. Will fit factory HK UMP barrels as well as the UMP 10mm/.40/.45/ US-made barrels offered by HK Parts. Made in USA Compatible With: HK UMP .40 S&W HK UMP .10mm HK UMP ...HKP-02368$159.95 -
HK23E Locking Piece #20 - 70 Degree
RCM
$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 to perfection. A perfect spare for your...HKP-02525$49.95 -
Out Of Stock
HK21 Locking Piece - 50 Degree
H&K Heckler & Koch
$149.95H&K HK21 (7.62x51/.308) Locking Piece - New Factory, Old Stock The HK21 standard 50-degree locking piece. Each LP includes the hardness "dot" to identify them as HK 21 locking pieces.HKP-01745$149.95 -
Out Of Stock
HK91, G3 Trigger Group (0,1) - 2 Position - Safe / Semi Only
HKP HK Parts
$429.95G3, 91, PTR 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-17235$429.95 -
HK33, HK93 Handguard - Key Mod
HKP HK Parts
$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 roller lock & HK enthusiasts with your shooting...HKP-17179$129.95 -
HK MP5K Trigger Group, Complete - 4 Position Semi Only - Clipped and Pinned
H&K Heckler & Koch
$1,499.95MP5K Semi Only 4 Position Trigger Group Complete With Safe, Semi functions only but provides the look and feel of the four position (0,1,3, F) housing. New HK German. Compatible With: MP5K SP89HKP-00185$1,499.95 -
HK MP5K, SP89 Trigger Housing - SEF - Contoured - Push Pin - 9mm
H&K Heckler & Koch
$324.95H&K MP5K/SP89 9mm SEF Contoured Trigger Housing - Push Pin Upgrade your HK MP5K or SP89 with this SEF contoured trigger housing, featuring ergonomic finger grooves for enhanced handling. This factory push pin housing is manufactured by HK Germany,...HKP-16551$324.95 -
Out Of Stock
Re-Timed Hammer for Registered Sear Packs - Belt Fed
Michaels Machines
$198.95MM Registered Sear Pack - Re-Timed Hammer - Belt-Fed Billeted re-timed Hammer that has been professionally re-timed by Michael's Machines for belt-fed HK firearms with registered sear packs. A one piece billeted HK re-timed hammer is the necessary...HKP-16996$198.95 -
Out Of Stock
HK MP5 Trigger Group - Burst 4 Position 0,1,3,F - USED
H&K Heckler & Koch
$2,599.95HK Heckler and Koch 4 Position Burst Trigger Group 0,1,3,F, USED Condition for HK MP5 HK German 4 Position 3 Round Burst Trigger Group – complete and ready for use. This is a high-quality, fully functional trigger group featuring a versatile 4...HKP-02610$2,599.95