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 P30L Tactical Barrel - .40 S&W - 4.45" - Threaded 14.5x1 LH
RCM
$225.00RCM HK P30L .40 S&W Tactical Barrel - Threaded 14.5x1 LHHKP-16220$225.00 -
HK USP Compact Variant 4 Right Decock Control Lever
H&K Heckler & Koch
$34.95USPC - Decock Lever V4 - Decock Only Compatible with all USP Compact pistols and provides the V4 Decock ONLY (no safety function) when used with the Variant 3 & 4 Detent Plate. This is the correct...HKP-02264$34.95 -
HK USP Series Front Sight 7.4mm
H&K Heckler & Koch
$19.95H&K HK USP Series Front Sight 7.4mm Compatible With: HK USP 9mm HK USP 40 S&WHKP-16548$19.95 -
HK416, MR556 Handguard - Extended Windowed - RAL8000
H&K Heckler & Koch
$840.00HK416A5, MR556 Extended Windowed Handguard - RAL 8000 HK German HK416 A5 extended handguard with window for use of the suppressed/non-suppressed gas block. This handguard is designed to minimize heat...HKP-17711$840.00 -
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: HKHKP-16774$9.95 -
HK416, MR556 Rail System - 10.5" - Super Modular - FDE
Geissele
$499.95Geissele HK416, MR556 10.5" Modular Rail - Desert Dirt Color (DDC) 9.7 " Extended HK 416 free float rail for use with all HK 416 & MR556 uppers.Please note: On the HK416 models the sling attachment...HKP-16460$499.95 -
$14.95 -
HK G36 Cocking Handle Bushing
H&K Heckler & Koch
$11.95HK German G36 Cocking Handle BushingHKP-01869$11.95 -
Out Of Stock
HK USC Magazine Release Axle
H&K Heckler & Koch
$18.95Heckler and Koch .45 ACP Magazine Release Axle for HK USC Replacement magazine release axle for HK USC .45 ACP platforms. This component is commonly replaced due to wear or breakage and may also be...HKP-02584$18.95 -
Out Of Stock
HK23E Locking Piece #20T - 70 Degree
H&K Heckler & Koch
$299.95HK23E 70 Degree 20T Locking Piece - German HK New This is hard to find as the HK23E or the parts for the HK23E are no longer in production.HKP-01451$299.95 -
HK91, G3 Bolt Carrier - Full Auto - Tungsten Filled
PTR
$299.95US-Made F/A G3, 91, and PTR-91 Bolt Carrier - Full Auto Carrier - Tungsten Filled PTR uses the exact Heckler & Koch specs and the same steel to manufacture their carriers. PTR uses HK factory...HKP-01777$299.95 -
HK91, G3 Firing Pin - Titanium
HKP HK Parts
$34.95HK G3, 91 & PTR Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made 100% in the USA. A must have upgrade to have on hand as the firing pin is one of the most abused components in...HKP-17937$34.95