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
HK91, G3 Barrel - 7.62x51 - 17.7" - Threaded 5/8x24
RCM
$264.99RCM HK G3/91 Threaded Barrel - 5/8x24-CHE Machined by RCM from a Mil-Spec 41V50 Hammer Forged Blank. These blanks are considered to be one of the finest made. 1:10 twist, Nitride finish. Perfect for that HK build or to replace that shot out barrel. Each...HKP-21838$264.99 -
HK P30SK Compensator - MOD 1
HKP HK Parts
$179.95HK Parts MOD 1 Compensator: H&K P30SK The HK Parts MOD 1 compensator perfectly blends form and function, setting a new standard in muzzle control. Experience a significant reduction in muzzle flip and recoil, allowing you to get back on target faster...HKP-21798$179.95 -
HK G36 Picatinny Adapter
HKP HK Parts
$129.95HKP HK G36 Picatinny Adapter Transform your G36 with our unbeatable rail stock adapter, engineered to seamlessly attach any 1913 Style Stock or brace. Our innovative design ensures the 1913 stocks & braces lock in securely, offering superior cheek...HKP-21665$129.95 -
Tri-Lug Adapter - 1/2x28 RH to Tri-Lug - 9mm - B&T
B&T Brugger & Thomet
$125.00B&T 1/2x28 to Tri-Lug Adapter for 9mm Convert any 1/2x28 RH 9mm threaded barrel to the HK spec. tri-lug with B&T's Swiss-made adapter adapter threaded 1/2x28. Compatible With the Following 9mm Firearms: HK MP5, MP5K, SP5, SP5K HK UMP...HKP-21752$125.00 -
B&T Official PVC Patch White
B&T Brugger & Thomet
$5.00B&T Official PVC Patch White - 2.5"HKP-21735$5.00 -
Out Of StockOn Sale
HK416 .22LR Dual Magazine Clamp - Black - BLEMISHED
HKP HK Parts
Now: $28.95Was: $49.95HKP HK416 .22LR Dual Magazine Clamp - Black - BLEMISHED MACHINE FLAWS COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Securely hold two HK 416 .22LR magazines...HKP-21607-BL-BNow: $28.95Was: $49.95 -
On Sale
HK Women's Shirt - Short Sleeve - Bundesadler
HKP HK Parts
Now: $11.22Was: $19.95HKP Womens Short Sleeve Bundesadler Shirt - Black Get your hands on some of our premium new apparel! Featuring our sleek new logo printed over soft cotton, this shirt is certain to catch an eye at the range! Features: 100%...HKP-21178-MNow: $11.22Was: $19.95 -
HK MP5K, SP5K Buffer Replacement - Choate Stocks
Choate
$20.95HK MP5K & SP5K Buffer Replacement - Choate Stocks Choate factory replacement buffer kit for Choate MP5K and SP5K stocks only.HKP-21041$20.95 -
Picatinny Optic Mount, Front Sight Tower - Red
$39.95HKP Picatinny Rail Mount for Front Sight Tower - Red HK Picatinny rail mount that replaces the forearm (small) push pin and mounts to the side of the front sight tower and allows you to add sling swivels, lasers, lights & accessories. This add on is...HKP-20800$39.95 -
HK91 SBA4 Pistol Stabilizing Brace and Adapter
SB Tactical
$319.95SB Tactical HK91 SBA4 Pistol Stabilizing Brace & Adapter Includes: G3, HK91 backplate & recoil assembly AR, M4 stock adapter Complete buffer assembly Castle nut SB Tactical Brace Features: Made in the USA Designed after the SBM4 5-position...HKP-19931$319.95 -
HK MP5 Bolt Group - Complete - .40 S&W, 10mm
HKP HK Parts
$414.95RCM- MP5 40 & MP5 10mm - Bolt Group Complete Ideal to replace out of spec, worn, or broken bolt groups or for that custom build. Includes: RCM bolt head complete RCM locking piece RCM firing pin RCM firing pin spring RCM full auto bolt carrier...HKP-19723$414.95 -
HK VP9, VP9SK, VP40 Trigger Housing - Complete - 9mm / .40 S&W
H&K Heckler & Koch
$89.95H&K VP9/VP9SK & HK VP40 (9mm & .40 S&W) Complete Trigger Housing Enhance the performance of your H&K VP9, VP9SK, or HK VP40 with this complete trigger housing. Designed for both 9mm and .40 S&W calibers, this high quality trigger...HKP-16797$89.95