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
HK P30L Conversion Barrel - .40 S&W to 9mm - Threaded 1/2x28
RCM
$214.95RCM HK P30L .40 to 9mm Conversion Barrel - Threaded - 1/2x28 This 9mm conversion barrel is a drop-in replacement that allows your P30L to shoot the ubiquitous 9mm cartridge. The conversion barrel features a standard 1/2x28 thread pitch and includes...HKP-21785$214.95 -
Out Of Stock
B&T GHM9 SD Handguard
B&T Brugger & Thomet
$255.00B&T GHM9 SD Handguard Upgrade your GHM9 SD with this precision-engineered handguard from B&T, designed specifically for the integrally suppressed GHM9 SD platform. This handguard features M-LOK slots at the 3, 6, and 9 o’clock positions...HKP-21739$255.00 -
Out Of Stock
B&T SPC9, SPC10, SPC45 Stock Conversion Kit, Complete
B&T Brugger & Thomet
$165.00Brugger and Thomet Complete Stock Conversion Kit for B&T SPC9, SPC10, SPC45 Factory B&T kit to convert the B&T retractable brace to a retractable stock configuration. Includes: Buttplate Limiter Screws Compatible With: B&T...HKP-21731$165.00 -
Out Of Stock
Picatinny Optic Mount - Low Profile - ACRO, NANO
B&T Brugger & Thomet
$115.00B&T Brugger and Thomet Aimpoint ACRO / NANO 22mm Low Mount The B&T ACRO NANO optic mount is a universal QD mount for any firearm featuring a Picatinny top rail. Keep your optic profile compact with this Swiss made mount. Compatible...HKP-21728$115.00 -
HK416, MR556, G36 A5 Flash Hider - Threaded 1/2x28
HKP HK Parts
$59.95HKP (5.56/.223) HK 416C A5 Flash Hider - Threaded 1/2x28 Made from ordnance grade steel, heat treated, and melonited (nitride process) for maximum longevity. Machined correctly to reduce tuning fork noise for a more pleasant time at the range. This is...HKP-21342$59.95 -
HK VP9 Magazine - 9mm - 22 Round - US
HKP HK Parts / Heckler & Koch
$79.9522 Round Magazine Complete - Red Extension - 9mm - HK PARTS - HK VP9, HK P30 HKPARTS +5 magazine extension coupled with a 17-round factory German magazine body adds five additional rounds total for a fully assembled 22-round HK...HKP-21195$79.95 -
HK UMP Hammer Spring - Left
USA
$9.95USA HK UMP Left Hammer Spring New U.S hammer spring- left side A high wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm. Compatible With: HK UMP models 45, .40 & 9mm USC .45 and other...HKP-20840$9.95 -
HKP Hat - Snapback - Baseball - OSFM - Black and Gray
HKP HK Parts
$17.95HKP Baseball Trucker Snapback Cap - OSFM - Black & Gray Get your hands on some of our premium hats! Features: Official HKP merchandise Cotton twill Mesh back panels Plastic adjustable snap closure Size: OSFM Six-panelHKP-20713$17.95 -
HK MP5 Magazine - 30 Round - .40 S&W, 10mm - Gray - Used
H&K Heckler & Koch
$159.95H&K Heckler & Koch 30 Round Magazine for HK MP5 .40/10mm - Gray - USED These magazines are no longer available, and we have just a few remaining units. Once they are gone, they are gone for good. These magazines are USED and are...HKP-01726$159.95 -
HK USC, UMP Cocking Handle Assembly - Complete
HKP HK Parts
$149.95HKP Cocking Handle Assembly for HK USC, UMP Complete cocking handle assembly for HK USC and HK UMP platforms. US-made and built to factory-spec dimensions and includes all required components for proper function and replacement. Includes: Steel cocking...HKP-19155$149.95 -
HK SL8 Complete Rear Sight
H&K Heckler & Koch
$99.95H&K HK SL8 Complete Rear Sight This item can be used on other applications as well as the SL8, G36 models.HKP-16354$99.95 -
X400 ULTRA Laser and Light Combo - Green
Surefire
$779.95Surefire X400 ULTRA Laser & Light Combo - Green The X400 Ultra (Green) is a compact Weapon Light for pistols and long guns featuring an ultra-high-output white-light LED and a green laser sight that's optimized for human eyesight. Its recoil-proof...HKP-19126$779.95