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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On Sale
HK G36, SL8 Aftermarket Side Rail - Left or Right
HKP HK Parts
Now: $16.54Was: $25.95G36 & HK SL8 Aftermarket Side Rail Left Or RightHKP-00286Now: $16.54Was: $25.95 -
HK21E, HK23E, HK11E, HK13E Hammer Spring
H&K Heckler & Koch
$19.95HK German HK21E, 23E, 11E & 13E Hammer Spring - German This is the heaviest HK hammer spring available for the roller lock family of firearms. The factory correct hammer spring for the beltfed series...HKP-15453$19.95 -
HK91, G3, PTR Magazine - 10 Round - Aluminum
H&K Heckler & Koch
$69.9510-Round 308 Magazine For HK Rifles - Alloy Aluminum Each HK magazine is made by using a factory German HK 20-round mag, that is then professionally converted to 10 rounds. Perfect for shooting...HKP-00351$69.95 -
HK33, HK93 Locking Piece - 300 BLK
RCM
$49.95RCM 300 BLK Locking Piece New US manufactured 300 BLK locking piece for custom 300 builds or other custom 300 BLK HK style roller locked firearms. Compatible With:HKP-15547$49.95 -
Out Of Stock
HK MP5SD Rubber Handguard
H&K Heckler & Koch
$229.95New HK German MP5SD Rubberized Steel Handguard HK discontinued this handguard but our HK Parts version is available here.HKP-00136$229.95 -
Out Of Stock
3 Point Sling Holding Clip - Replacement
H&K Heckler & Koch
$19.95New HK German 3-Point Sling Rear Stock Holding Clip This is the hard-to-find holding clip that secures the standard 3-point HK sling to the A2 or A3 stock. The rear sling clip can become weak and...HKP-01043$19.95 -
HK416, MR556 Stabilizing Brace - SBA5
SB Tactical
$123.95SB Tactical SBA5 Brace The SBA5 Pistol Stabilizing Brace is 5-position adjustable and designed for all platforms capable of accepting a mil-spec carbine receiver extension. Featuring an integral,...HKP-21794-M$123.95 -
HK MP5K 0,1,3 Burst Trigger Housing or Frame
H&K Heckler & Koch
$224.95MP5K & SP89 Ambidextrous Grip Frame, Trigger Housing marked with the safe, semi & 3rd burst options only (3 position burst only housing). A Genuine Heckler and Koch part. This housing is made for...HKP-01684$224.95 -
On Sale
HK MP5, HK94, SP5 Magazine Spring - 20 Round
HKP HK Parts
Now: $4.43Was: $6.9520 Round Magazine Spring - HK MP5, 94, SP5 Fits all factory spec steel 20 round MP5, 94 style curved magazines. A must-have repair and replacement part great for spares.HKP-20687Now: $4.43Was: $6.95 -
PTR PDW Bolt Carrier - Full Auto - 7.62x39 / 7.62x51 / .308
PTR
$229.95 - $330.95PTR PDW (7.62x39) & (7.62x51/.308) Pistol Full Auto Bolt Carrier Made by PTR using the same blueprints and materials the German HK factory uses has allowed PTR91 to manufacture the finest of HK style...HKP-20165-M$229.95 - $330.95 -
AR-15 Stock - CTR 6 Position - Mil-Spec - Magpul
Magpul
$79.95Magpul AR-15 CTR 6 Position Stock - Mil-Spec The Magpul CTR (Compact/Type Restricted) Commercial-Spec Model is a drop-in replacement buttstock for AR15/M16 carbines using Mil-Spec-sized receiver...HKP-02375$79.95 -
On Sale
HK MP5, SP5 Binary Trigger Group – SEF Navy - BFSIII - 9mm
FA Franklin Armory
$573.72 - $899.95Franklin Armory - BFSIII HK-C1 – Binary Trigger Group – SEF Navy Housing SEF Navy style- HK binary trigger group BinarHKP-19506-M$573.72 - $899.95