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 USP Expert Barrel - .40 ACP - 5.19"
H&K Heckler & Koch
$299.95New 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 barrel for the USP .40 firearm. Made in Germany with a...HKP-01472$299.95 -
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 want to convert your .357 USPC to .40 cal...HKP-01413$234.95 -
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 -
HK Mark 23 6.7mm +2 Rear Sight
H&K Heckler & Koch
$59.95HK Mark 23 Rear Sight - 6.7 mm This sight comes 6.7mm height +2mm over the stock height. Other Rear Sight Heights: 5.5mm (-8) 5.9mm (-4) 6.3mm (standard) 6.7mm (+4) 7.1mm (+8) 7.5mm (+12)HKP-02256$59.95 -
HK P30SK Holster - Infidel Max
Comp-Tac
$74.95Comp-Tac HK P30SK Infidel Max Holster The Infidel Max Holster is an all-Kydex Inside the Waistband holster with cant adjustment holes to allow the user to change from a reverse cant, speed cant and FBI forward cant. The Infidel Max Holster all-Kydex body...HKP-17516-M$74.95 -
HK P2000 Backstrap with Safety - Large - Black
H&K Heckler & Koch
$39.95H&K P2000 Back Strap w/ Safety - Large - Black Perfect for those with large hands. Compatible With: HK P2000HKP-01572$39.95 -
HK P2000 Backstrap with Safety - Medium - Black
H&K Heckler & Koch
$44.95H&K P2000 Backstrap w/ Safety - Medium - Black Compatible With: HK P2000 Note: This will not fit the SK models but will fit all HK P2000 standard models.HKP-01566$44.95 -
HK416, HK417, MR556, MR762 Long Disconnector Spring
H&K Heckler & Koch
$9.95H&K HK MR556/MR762/416/417 Long Disconnector Spring HK German manufactured disconnector spring. This is the longer of the 2 springs found in the trigger/sear assembly. Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-16774$9.95 -
HK416, MR556 Barrel - 5.56 / .223 - 10.4" - Threaded 1/2x28
HKP HK Parts
$369.95MR556 & HK416 Barrel - 10.4"- US Made - Threaded 1/2x28 Finally an answer for all of those that have been wanting a 10.4" 416 or MR556 barrel option for your MR556, CR556 & HK 416's. Each barrel is as close as you can get for those that want a HK...HKP-18200$369.95 -
HK G36 Cocking Handle Bushing
H&K Heckler & Koch
$9.95HK German G36 Cocking Handle BushingHKP-01869$9.95 -
HK USC Locking Lever Axle - .45 ACP
H&K Heckler & Koch
$29.95HK USC Lower Locking Lever Axle A great item to have on hand as spares. New German HK. Compatible With: All USC lowersHKP-16376$29.95 -
HK UMP Barrel - 9mm - Threaded with 3 Lug
Michaels Machines
$549.95HK UMP 9mm Barrel - Threaded - 3-Lug Specifications: 3Lug Threaded Compatible With: UMP 9mmHKP-02278$549.95