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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HK91, G3 M4 Stock, Complete
PTR
$234.95PTR HK 91/G3 (7.62x51/.308) M4 Stock Complete AR15/M16 retractable stock combo set up for use on an HK91, G3 & PTR91 style of rifles. This is a perfect compliment for those that want to use an AR M4...HKP-16142$234.95 -
Out Of Stock
HK53, HK51 Handguard - Full Length
H&K Heckler & Koch
$59.95H&K HK53/HK51 Handguard - Full Length H&K German manufactured HK51 and HK53 polymer handguard. This handguard is the proper length to cover the extended portion of the trunnion found on the HK53 and...HKP-00468$59.95 -
HK33, HK53, HK93 Firing Pin - Titanium
HKP HK Parts
$49.95HK93, 33, 53 Firing Pin - Titanium A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK 93, HK33 & HK53 weapon system. Get the lightest, strongest...HKP-17769$49.95 -
HK MP5, SP5K Muzzle Brake - 3 Lug - 9mm - Titanium
HKP HK Parts
$104.95HK Parts Titanium Muzzle Brake for 9mm, 3- Lug Barrels US for HK MP5 and HK MP5K Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This muzzle brake doesn't require the of...HKP-18854$104.95 -
Out Of StockOn Sale
HK416, MR556 ARC-Fire with Geissele Trigger - 3-Position - Ambi Controls
AS Designs
Now: $559.95Was: $689.95HK416, MR556 A4 3-Position ARC-Fire with Geissele*** Trigger and Ambidextrous Controls AS Designs' ARC-Fire (Active Reset Clutch) trigger is an innovative take on forced reset triggers. The trigger...HKP-22435Now: $559.95Was: $689.95 -
Out Of Stock
HK91, G3, PTR Magazine - 10 Round - Alloy
H&K Heckler & Koch
$37.95H&K HK91, G3, MSG90 10 Round Magazine - Alloy This part counts as 1 US-made part for 922r compliance for HK rifles. Manufactured by HK and converted to ten round capacity in the United States using...HKP-22418$37.95 -
On Sale
HK G36, HK33 Compensator - 15x1 RH - KeyMount (KeyMicro)
JMAC Customs
Now: $44.96Was: $99.95JMAC G36/HK33 (5.56/.223) Recoil Reduction Device - 2 Port Compensator 15-1 Threads - KeyMount (KeyMicro) Can be permanently attached to a 14.5" barrel to achieve 16" OAL. Compatible With: HKHKP-21254Now: $44.96Was: $99.95 -
Out Of Stock
HK G36, SL8 Front Sight Screw - Extended - Dual and Single Optics
USA
$5.95Single Optic Front Sight Screw - G36 - Extended This is a required part if you want to install either the dual or single optic. Compatible With: HK G36<HKP-20894$5.95 -
HK VP9 Stand Off Device
HKP HK Parts
$109.95HKP HK VP9 Stand Off Device The HK Parts VP9 standoff is designed to keep the slide in battery to allow discharge when the firearm is pressed against or comes into contact with an object. It is an...HKP-19143$109.95 -
HK MP5 Modular Stock System - .22LR
F5 MFG
$349.95F5 MFG Modular Stock System with MP5 .22 Adapter Features: HK MP5 22 compatible adapter 6061 AL and nylon 6/6 polymer constructionHKP-20196$349.95 -
HK VP9 Ledge Straight Eight Sight Set for Suppressor - Optics Ready
Heinie
$205.95Heinie Optics Ready HK VP9 Ledge Straight Eight Sight Set for Suppressor This sight set features our rear Ledge design. The military inspired sight design combines the best features of our Classic...HKP-19998$205.95 -
HK417, MR762, MR308 Trigger - Geissele
Geissele
$479.95HK MR 762 Trigger- Geissele The HK MR762 trigger is similar to our SSA with a 4.5 total pull weight. It can be used in both the HK 762 and semi-auto HK 417's. Please note: After installing the MR762...HKP-16463$479.95