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 91 (7.62x51/.308) Flash Hider - Threaded 5/8x24 RH
HKP HK Parts
$27.95HK 91 (7.62x51/.308) Flash Hider - Threaded 5/8x24 RH Made in the USA to the exact specifications of the original HK flash hider, following strict HK standards. This flash hider offers the best quality and price in the country, making it the finest...$27.95 -
Out Of Stock
HK VP9, VP40 Recoil Spring - Complete
H&K Heckler & Koch
$89.95H&K HK VP9, HK VP40 Complete Recoil Spring Assembly Newer style recoil spring offering that is now standard in all VP9 & VP40 models. This model has a slightly stiffer spring rate than the earlier 1st gen VP9 recoil spring models...$89.95 -
HK MP5 A3 Buffer - Stock - Retractable
H&K Heckler & Koch
$27.95H&K HK MP5 A3 Buffer - Stock - Retractable Stock Buffer These common wear items need to be replaced when they become yellow, brittle, and worn. Inspect your buffer for the following: discoloration, the buffer becomes hard and brittle, tears, cracks,...$27.95 -
HK MP5SD Barrel Port Brush Handle
HKP HK Parts
$39.95HKP SD Barrel Port Brush Handle The HK Parts SD brush handle is the perfect tool to pair with your factory H&K or HK Parts barrel brush. Unlike other brush handles, the HKP handle features a locking clamp allowing the user to rotate the brush...$39.95 -
HK45 Magazine - 13 Round - .45 ACP
HKP HK Parts
$104.95HKP 13 Round HK 45/45 Tactical .45 ACP Magazine HK45 & HK45 Tactical +3 magazine extension coupled with a new HK German 10 round HK45 magazine. Each unit is then fully assembled as a 13 round HK45, HK45 Tactical magazine. Ideal for concealed carry,...$104.95 -
HK MP5 Picatinny Mount Base - Battle Steel
Botach Tactical
$59.95Botach Tactical Battle Steel HK MP5 Mount - Picatinny Base Botach Tactical Battle Steel Ultra-Low-Profile Mount for HK MP5/HK33/HK53 Firearms. Compatible With: HK MP5 & MP5K HK33/53/93 MAC-5 clones may require custom fitment. Modified...$59.95 -
HK P7 PSP, P7M8 Magazine Spring - 9mm - 8 Round
H&K Heckler & Koch
$8.958 Round HK P7 PSP & P7M8 9mm Magazine Spring Compatible With: P7 PSP P7M8$8.95 -
HKP UMP/USC (.40 S&W/.45 ACP/9mm) Recoil Buffer
$11.95HKP USC & UMP Recoil Buffer Replaceable spare lower housing or buffer for buffer housings. This is a high wear & replacement item and a must have for spare parts. Compatible With: HK USC .45 HK UMP models$11.95 -
HK416, MR556, HK417, MR762, G28 Pistol Grip with Storage - RAL8000
H&K Heckler & Koch
$46.95H&K HK MR556/MR762/416/417/G28 Battle Grip With Storage - RAL 8000 New HK German V7 factory battle grip with storage compartment in the bottom of the grip. Superior fit & feel to any other grip on the market. HK has hit a home run with...$46.95 -
HK MP5, MP5K Magazine Block - 30 to 10 Round Conversion - Curved
Raddlock
$9.95Magazine Block Plug To Reduce HK MP5 30 Round Magazine To 10 rounds MP5 10/30 mag block. This is designed to be used on the HK MP5 30 round, curved, steel magazine. Very easy to install & use. Compatible With: MP5 & MP5K 30 round, curved...$9.95 -
HK33, HK53, HK93 Rear Sights Windage Screw
H&K Heckler & Koch
$4.95H&K Rear Sights Windage Screw - HK 90 Series This is a hard-to-find rear sight screw new from HK Germany - not surplus.$4.95 -
HK90 Series Hammer Axle For Trigger Pack
H&K Heckler & Koch
$2.77H&K 90 Series Hammer Axle For Trigger Pack HK German used hammer axle for the 90 series style of trigger packs. Each axle pin or pivot pin measures .237 inches (6.0mm). A great spare and must have spare part for anyone that owns an HK 90 series of...$2.77