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 Barrel - 5.56 / .223 - 8.98"
HKP HK Parts
$499.95HKP HK G36C Barrel Brand new HK G36C barrel made from 416 stainless steel and nitrided, uninstalled & unfired. The G36C barrel uses a factory German or USA spec G36K/G36C gas block. Counts as one USA...HKP-18195$499.95 -
On Sale
HK VP9, VP40 Compensator with Rail Adapter
HKP HK Parts
Now: $72.71Was: $184.95HK VP9 & VP40 - Comp Weight™ With Rail Adapter HK Parts VP9, VP40 Comp Weight™/compensator with Rail Adapter Installed is the perfect addition to your HK VP9/VP40 firearm with our low profile,...HKP-18755Now: $72.71Was: $184.95 -
HK UMP Barrel - .45 ACP - 16.5" - Threaded 16x1 LH
HKP HK Parts
$369.95HKP HK UMP .45 ACP Barrel - Threaded 16x1 LH This new 16.5" threaded barrel is designed for the UMP or Omega firearms. A great replacement or threaded barrel upgrade. Compatible With: HK UMPHKP-19395$369.95 -
HK VP9, VP40 Backstrap - Large - FDE
H&K Heckler & Koch
$29.95H&K VP9, VP40 Backstrap - Large - FDE New HK German manufacture Compatible With: HK VP9 HK VPHKP-18180$29.95 -
HK VP9, VP40 Grip Panel Right Side - Small - FDE
H&K Heckler & Koch
$24.99H&K VP9, VP40 Grip Panel Right Side - Small - FDE New HK German manufactured. Right side, small size. Perfect for spare or for custom stippling projects. Drop-in part for your HK VP pistol. CompatibleHKP-18115$24.99 -
HK417, MR762 Cartridge Extractor
H&K Heckler & Koch
$94.95Heckler and Koch Cartridge Extractor for HK417, MR762 Compatible With:HKP-16842$94.95 -
HK417, MR762 Ejection Port Cover
H&K Heckler & Koch
$42.95H&K HK MR762/417 Ejection Port Cover New HK German polymer .308 style MR762, HK 417 & G28 firearms. Compatible With: HK MR762 HK 417HKP-16598-M$42.95 -
HK USP Expert Barrel - .40 ACP - 5.19"
H&K Heckler & Koch
$639.95New HK German Factory USP Expert .40 Barrel This barrel will fit a stock USP .40 full-size pistol but will extend out the front of the slide for those who want to use a Comp Weight? or need a longer...HKP-01472$639.95 -
HK USP Compact Barrel - .40 S&W - 3.58"
H&K Heckler & Koch
$234.95HK USP Compact .40 S&W Barrel - 3.58" Overall Barrel Length A drop-in replacement barrel for all HK USPC .40 or .357 pistols. This is a great spare or replacement barrel. This is a must-have if you...HKP-01413$234.95 -
HK45 Compact LEM Hammer Spring
H&K Heckler & Koch
$9.95Hammer Spring For HK 45C LEM Models This hammer spring is the factory correct LEM hammer spring for the HK45C and HK45CT. This is the spring needed to use any other variant of LEM kit to be complete...HKP-15789$9.95 -
Out Of Stock
HK45, HK45 Compact V4 LH Decock Only Lever
H&K Heckler & Koch
$29.95HK 45 & 45C V4 LH Decock Only Lever The V4 lever is for the right side of the frame for a left-handed shooter. This lever is to be used in conjunction with the V3/4 detent plate found below. Detent...HKP-02707$29.95 -
HK45, HK45 Compact Extractor
H&K Heckler & Koch
$49.95German HK45 & HK45C Extractor - New A great spare and replacement part to have. Compatible With: HK45 Tactical HK45HKP-01298$49.95