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 MP5 40 Trigger Group - Navy Style - 2 Position - - Clipped and Pinned - 2 Position - Navy - Semi Only
H&K Heckler & Koch
$769.95HK MP5 40 2 Position Navy Semi Only Clipped & Pinned Trigger GroupHKP-01752$769.95 -
Out Of Stock
HK USC, UMP Front Sight
USA
$11.95Front Sight - HK USC, UMP - USA Easy to swap out. Knock out the roll pin, remove, replace, and then re-insert the roll pin. Common wear or breakage part. Compatible With: All models of USC and UMP'sHKP-19124$11.95 -
$89.99 -
Out Of Stock
HK G36, SL8 Lower Axle Pin
H&K Heckler & Koch
$0.00G36 & HK SL8 Lower Axle Pin The G36/SL8 (all models) uses the same size axle pin for all of the lower components (3 total). Except for the bolt holding open the device axle. Must insert from the right side to the left (per factory instruction).HKP-00291$0.00 -
HK G36 Magazine Follower - 30 Round
H&K Heckler & Koch
$9.95H&K HK G36 30 Round Magazine Follower German HK G36 30 round magazine follower. New HK German manufacture.HKP-17338$9.95 -
Out Of Stock
HK SL8 Buttstock Spacer - Gray
H&K Heckler & Koch
$0.00HK SL8 Stock Spacer HK German SL8 stock spacer. These stackable spacers will allow the user to gain extra length of pull for the desired length on the SL8 factory stock. Spacer fits all SL8 rifles including the new all black SL8-6 rifles.HKP-18054$0.00 -
HK G36K Piston Rod - Incomplete
H&K Heckler & Koch
$69.95H&K HK G36K Incomplete Piston RodHKP-16345$69.95 -
Out Of Stock
HK G36K Handguard - Slimline Style
H&K Heckler & Koch
$0.00G36K Slim line handguard with Hkey mounting slots HK German G36K forearm with HKey mounting slots. Made in Germany.HKP-18483$0.00 -
Out Of Stock
HK G36K, SL8 Flash Hider - 4 Prong - Threaded 15x1 RH
H&K Heckler & Koch
$0.00HK Heckler and Koch's Factory 4 Prong Flash Hider - 15x1 RH HK flash hider will fit any HK 5.56/.223 rifle barrel threaded 15x1 RH. Specifications: Overall Length 2 7/8" Threaded 15x1 RH Compatible With: HK G36K HK SL8 5.56/.223...HKP-00282$0.00 -
Out Of Stock
HK G36 Bolt Group - Complete
H&K Heckler & Koch
$0.00HK G36 Bolt Group New Factory German HK. HK G36 HK G36K HK G36CThis will not work with a HK SL8.HKP-00635$0.00 -
HK45 Recoil Spring Guide Rod
H&K Heckler & Koch
$59.95H&K HK 45 Recoil Spring Guide Rod - Black Compatible With: HK 45 HK 45 TacticalHKP-18592$59.95 -
Out Of Stock
HK VP40 Tactical Barrel - .40 S&W - 4.45" - Threaded 9/16x24
RCM
$212.50RCM HK VP40 .40 S&W Tactical Barrel - Threaded 9/16x24 Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest threaded barrel for the HK VP40 .40 S&W pistol,...HKP-17370$212.50