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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HK45, HK45 Compact, USP, USP Compact LEM Hammer
H&K Heckler & Koch
$75.95Heckler and Koch HK USP, USP Compact, HK45, HK45 Compact LEM Hammer LEM (Law Enforcement Modification) hammer designed for compatible HK hammer-fired pistol platforms. Intended for use in LEM trigger configurations and suitable for maintenance,...HKP-02705$75.95 -
HK416, MR556 Hammer, Complete - Semi Auto
H&K Heckler & Koch
$107.95H&K HK416, MR556 Semi-Auto Hammer - Complete Genuine German complete hammer and spring assembly. Includes: Semi-auto hammer Hammer spring Side bushing Compatible With: MR556A1 MR556 A4 HK416 AR-15 AR-15 style semi-auto firearms chambered in...HKP-02673$107.95 -
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 required when configuring compliant magazine release...HKP-02584$18.95 -
Out Of Stock
HK23E Ammunition Belt Box - 5.56 / .223
H&K Heckler & Koch
$0.00HK23E & MM23E Belt Box - German HK Brand new German HK23E, MM23E made feed box. The German units have long since been out of production so getting these new old stock German HK feed boxes is a windfall and a rare opportunity. Compatible With: HK 23E...HKP-18012$0.00 -
$49.95 -
HK91, G3 Magazine Unloader
H&K Heckler & Koch
$49.95HK Factory German Unloader For HK 91, G3, And PTR Magazines Brand new HK German manufactured magazine loader for the alloy or steel mags. Made from all steel construction. Compatible With: HK 91 magazines HK G3 magazines PTR, CETME HK PSG-1 magazines HK...HKP-01508$49.95 -
HK91, G3 Buttstock Set with Backplate - Black - Used Good
H&K Heckler & Koch
$299.95Original G3, 91, PTR German Army Used Surplus Black Stock Set - Complete Factory HK German production. Each stock set is used but in perfect working order. Each set is in overall good condition. Most will clean up nicely with a little TLC...HKP-16205$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 blueprints for manufacturing & quality control. This...HKP-01777$299.95 -
HK33, HK53, HK93, HK91, G3 PRS Extended Butt Pad
Magpul
$15.95Magpul HK 91/G3 (7.62x51/.308) PRS Extended Butt Pad Replaces standard butt pad and adds 1/2" to the overall length of the PRS stock. This part also adds slightly more cushioning, as it has more rubber. Compatible With: PRS Stock (MAG307) PRS...HKP-00843$15.95 -
Out Of Stock
HK33, HK53, HK93 Magazine Catch - Latest Design
H&K Heckler & Koch
$49.95Heckler and Koch German Factory Magazine Catch for HK33, HK53, HK93 New HK German HK33, HK53, and HK93 mag catch for magazine release. Compatible With: HK33, HK53, HK93 HK33K Clone or other custom buildsHKP-01059$49.95 -
HK93 Trigger Pack, Complete - SEF Semi Auto
H&K Heckler & Koch
$349.95HK German HK93 SEF Semi Trigger Pack complete We have one of the best HK gunsmiths in the country that can take hand-picked German HK F/A trigger packs and modify them to semi-auto. This is done with the best and most precise machinery and jigs available...HKP-00201$349.95 -
HK MP5K, SP89 Trigger Group, Complete - FBI
H&K Heckler & Koch
$849.95HK Heckler and Koch FBI Trigger Group Complete for HK MP5K and HK SP89 New HK German. This is a great upgrade and investment for your HK SP89 or HK MP5K clone. This trigger group is clipped and pinned and ready to install on your HK, with all the latest...HKP-00401$849.95