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 G36C Gas Piston Rod and Spring
H&K Heckler & Koch
$89.95Heckler and Koch Complete Gas Piston Rod and Spring Assembly for HK G36C A must-have item for HK G36C conversions from G36 to SL8's or for spares for your G36CHKP-00353$89.95 -
On Sale
HK VP9, VP40 Compensator - Quick Detach
HKP HK Parts
$61.85 - $84.35HKP Comp Weight™ HK VP9, VP40 Quick Detach Compensator CLEARANCE COMPENSATORS ARE NOT AVAILABLE IN ANY COLORS ASIDE FROM WHAT IS PURCHASABLE ON THE WEBSITE. WE WILL NOT BE MACHINING THESE...HKP-21080-M$61.85 - $84.35 -
On Sale
HK MP5 Parts Kit - 9mm
Now: $1,087.49Was: $1,929.95HK German MP5 made with Swiss Marked & Proofed HK MP5 Parts Kit Includes: German demilled HK front sight tower assembly and sling loop German HK cocking tube assembly completeHKP-19477Now: $1,087.49Was: $1,929.95 -
HK MP5 Locking Roller -4 - .40 S&W
HKP HK Parts
$11.95HK US MP540 Undersized Locking Roller, -4 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for...HKP-17561$11.95 -
HK45 Compact Hammer Spring
H&K Heckler & Koch
$10.95Hammer Spring For HK45 Compact This part is shorter than the HK45 hammer spring and is used on the HK45C only.HKP-01805$10.95 -
HK Mark 23 Rear Sight Retaining Screw
H&K Heckler & Koch
$19.95HK Mark 23 Rear Sight Retaining ScrewHKP-01628$19.95 -
HK VP40, P30, P30L Magazine Body - .40 S&W - 13 Round
H&K Heckler & Koch
$45.99HK VP40, P30, P30L, P30S 13 Round Magazine Housing - .40 Cal Brand new HK German factory magazine body ONLY for the 13 round .40 cal magazine. This item is for the mag body NOT the complete magazine...HKP-17227$45.99 -
HK P30, P30L Firing Pin
H&K Heckler & Koch
$59.95Heckler and Koch Firing Pin for HK P30, P30L German-made HK firing pin for the P30 and P30L. Steel construction, factory-spec, and designed for both 9mm and .40 S&W models. This is the correct OEMHKP-02211$59.95 -
Out Of Stock
HK MP5, MP5K Magazine Block Plug - 10 to 30 Round Conversion - .40 S&W, 10mm
HKP HK Parts
$9.95HKP HK Parts 10 Round Magazine Block for HK MP5 .40, 10mm MP5 10 to 30 mag block plug. This is designed to use on the HK MP5 40, 10 30 round magazine. Very easy to install and use.HKP-18170$9.95 -
HK416, MR556 Adapter - Muzzle Brake or Suppressor - 1/2x28
Surefire
$165.00Surefire (5.56/.223) Muzzle Brake/Suppressor Adapter - Threaded 1/2x28 The SureFire muzzle brake is designed for M4, M16, HK 416, and MR556 weapons with 1/2-28 muzzle threads. It significantly...HKP-17378$165.00 -
HK416, MR556, HK417, MR762, G28 Pistol Grip - PSG1 Sniper Style - RAL8000
H&K Heckler & Koch
$134.95H&K HK MR556/MR762/416/417/G28 Sniper PSG1 Style Grip - RAL 8000 HK German PSG1 style sniper factory. Each grip will fit all AR-15/M-16 lower receivers as well. Superior fit & feel to any other grip...HKP-17693$134.95 -
HK416, MR556, HK417, MR762 Buttpad - E2 Concave
H&K Heckler & Koch
$55.95Heckler and Koch German E2 Concave Butt Pad for HK416, MR556 and HK417, MR762 Can be added as an option on the HK E1 HK416 and HK417 buttstock. Providing you an option to use either the concave or...HKP-00050$55.95