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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Out Of Stock
HKP 25 Round HK USP 9mm Magazine
HKP HK Parts / Heckler & Koch
$119.95HKP 25 Round HK USP 9mm Magazine HK Parts +10 magazine extension coupled with a 15 round magazine. Each unit is then fully assembled as a 25 round magazine. Ideal for competitive shooters, concealed carry or for everyday use while at the range...HKP-21357-M$119.95 -
HK UMP, USC Curved Trigger
HKP HK Parts
$99.95HKP HK Parts HK UMP and USC - Curved Trigger With our new curved trigger, you will improve the aesthetics of your firearm. Our curved trigger has spaced-out serrations at the face of the trigger for a far superior grip. Each trigger counts as one...HKP-21126-M$99.95 -
HK G36/SL8 Quad Rail Handguard
B&T Brugger & Thomet
$379.95B&T Handguard Quad Rail For HK G36 and SL8 New B&T Swiss manufactured G36 and SL8 quad rail system. Each unit comes with the complete quad rail as well as the rail covers and sling swivel for a sling. Compatible With: HK G36 (Not...HKP-16897$379.95 -
HK PARTS, HK 27 Round HK VP9, HK P30 9mm Magazine Complete - Red
HKP HK Parts / Heckler & Koch
$99.9527 Round Magazine Complete - Red - 9mm - HK PARTS - HK VP9, HK P30 HK Parts +10 alloy magazine extension coupled with an HK 17 round factory German magazine adds 10 additional rounds total for a fully assembled 27 round HK VP9/P30 magazine. Ideal for...HKP-19840$99.95 -
HK G3, HK33, HK93 Bayonet w/Scabbard - Surplus
H&K Heckler & Koch
$106.95HK G3, HK33, HK93 Bayonet with Scabbard - Surplus Genuine German HK military surplus bayonet in used/good condition. These are the 12-groove version of the popular military bayonet. Scabbard is included. Compatible With: HK G3 HK91 HK33 HK93HKP-19691$106.95 -
HK417, MR762 Castle Receiver Extension Nut for Buffer Tube
H&K Heckler & Koch
$44.95H&K HK MR762/417 Castle Receiver Extension Nut For Buffer Tube - Black New HK German manufacture and the factory correct offering with the proper installation screws and staking guides. Compatible With: HK MR762 HK 417HKP-16768$44.95 -
HK Mark 23 Rear Sight Retaining Screw
H&K Heckler & Koch
$19.95HK Mark 23 Rear Sight Retaining ScrewHKP-01628$19.95 -
HK P30 Series Right Slide Release Lever
H&K Heckler & Koch
$44.95HK P30 Series Right Slide Release LeverHKP-01880$44.95 -
Out Of Stock
HK VP9, P30, HK45 Optic Plate Kit - Trijicon RMR / SRO - Red Dot Pistol Mount
Trijicon
$124.95Trijicon HK VP9/P30/45 RMR Pistol Mount Trijicon manufactured RMR mount to allow the use of an RMR to replace the rear sight on HK pistols. Compatible With: HK VP9, VP9SK, VP40 (excludes VP9 optic ready slides) HK VP9A1 F, VP9A1 K HK45, HK45...HKP-17336$124.95 -
Out Of Stock
MR556 Upper Receiver Kit -16.5" - M-LOK
H&K Heckler & Koch
$1,779.95New HK Factory German MR556 Upper Kit with M-LOK forearm Includes: Complete MR556 upper receiver with M-LOK forearm MR556 Bolt group Complete Tungsten Filled HK Buffer HK Buffer Spring One 30 Round HK Steel Maritime Magazine No FFL required as the...HKP-17366$1,779.95 -
HK416, MR556, HK417, MR762 Disconnector Spring - Short
H&K Heckler & Koch
$6.99Heckler and Koch HK416, MR556, HK417, MR762 Disconnector Spring - Short This is the shorter spring of the 2 found in the trigger assembly. Compatible With: HK416, MR556 HK417, MR762HKP-02675$6.99 -
HK USC, UMP Extractor - .40 S&W
H&K Heckler & Koch
$54.95HK German UMP Or USC .40 Extractor New HK German factory OEM part. This is a high wear and replacement item as the .40 cal cartridge has a high impulse that results in an increased occurrence of this extractor wearing out and breakage. A must-have...HKP-00264$54.95