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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On Sale
HK Cheek Piece
AC-Unity
Now: $34.95Was: $39.95AC-Unity HK Cheek Piece New production HK cheek piece for your fixed stock on your G3, HK91, PTR91, HK33, HK94, MP5 or HK94 rifle. Works on all HK style fixed stocks that have push pin retainer bushings in the stock. This will give you the proper cheek...HKP-20153Now: $34.95Was: $39.95 -
HK90 Series Roller for Bolt Head 8.00mm - Standard
H&K Heckler & Koch
$27.95H&K Roller For Bolt Head 8.00mm - Standard The 8mm roller is the proper roller size for the standard "zero" function. The correct 8mm roller is essential for proper head spacing and bolt gap. New HK German, not surplus or used goods, that are worn...HKP-00506$27.95 -
HK416, MR556, HK417, MR762 Pistol Grip with Storage
H&K Heckler & Koch
$59.99H&K Heckler and Koch Battle Grip with Storage for HK416, HK MR556, HK417, HK MR762, and HK G28 HK German V7 factory battle grip with storage compartment incorporated in the grip base. Compatible With: HK416, HK416-A5, MR556 HK417, HK MR762 HK...HKP-17678$59.99 -
HK MP5K, SP5K Handguard - M-LOK
MI Midwest Industries
$114.95M-LOK Handgaurd for MP5K, SP5K, SP89 Firearms Features: Made in the USA, 922r Compliant Professional grade one-piece design Simple installation, includes all tools Mil-spec top rail Extremely lightweight design weighs only 2.6 oz with hardware Slim 1.6...HKP-18438$114.95 -
GSG-5, GSG5PK Magazine Spring - .22LR - 22 Round
GSG German Sports Guns
$4.95GSG 22 Round GSG-5 .22LR Magazine Spring A must-have replacement spare part as the mags are used or stored. Perfect for those who have weak feeding Promag GSG mags, as these mag springs will help get the mags running as they should. Compatible...HKP-14548$4.95 -
Out Of Stock
HK91, G3 Rear Push Pin Reinforcement Weldment
PTR
$29.95HK91, G3, PTR, CETME Push Pin Reinforcement Weldment HK91/G3/PTR91 or CETME steel receiver flat weldment that is added to the rear of the receiver where the 2 large stock push pins install to reinforce this section of the receiver against damage or use...HKP-18224$29.95 -
HK VP9 Series Trigger Pull Spring Set
Lazy Wolf
$19.95Lazy Wolf Guns Duty/Defensive Carry Enhanced Trigger Pull Spring Kit Based on the Lazy Wolf Guns Design. We now have an intermediate drop in set of springs for the utmost in performance and reliability in ALL VP9 family pistols. Defensive carry,...HKP-19515$19.95 -
HK MP5, HK91, G3, HK33, HK93 Optic Mount - Windowed
MFI
$124.95MFI HK G3, 91, 93, 33 PTR & MP5 Scope Mount - Windowed This model is the same as the best-selling low-profile mount, only with added windows for extra weight savings and a viewing window to see the serial numbers on the MP5/94 series of...HKP-02708$124.95 -
HK VP40, P30, P30L Magazine - 13 Round - .40 S&W
H&K Heckler & Koch
$49.9513 Round S&W Magazine New HK German manufacture & factory fresh manufacture. Compatible With: HK VP40, VP40 Tactical HK P30 HK P30L HK P30S HK P30SK Please Note: This will also fit the USPC & P2000/P2000SK .40 cal models but will...HKP-01474-M$49.95 -
HK G36 Magazine - 30 Round
H&K Heckler & Koch
$124.95HK German G36 30 Round Magazine HK German 30-round magazine, designed to perfectly fit all G36, G36K, and G36C variants, as well as converted SL8's with the G36 magwell. These are brand-new, top-quality magazines straight from the factory. Keep in mind...HKP-00624$124.95 -
HK MP5 .22 Optic Mount - Minimalist - Picatinny Rail
HKP HK Parts
$97.95HKP HK MP5 .22 Minimalist Picatinny Rail Optic Mount Our new picatinny style optic mount is a game changer for those that want to have a minimalist look on their MP5 .22. You can have a picatinny rail with out having to compromise all the real estate...HKP-21369$97.95 -
HK VP9, P30 Magazine Floorplate Extension - 9mm, .40 S&W
HKP HK Parts
$24.95HKP HK Parts 9mm Magazine Extension Floorplate for HK VP and HK P30 Extended baseplate that adds about .30" in length to the bottom of the magazine and replaces the stock floor plate on the VP9/P30 & VP9SK, P30SK magazine. The extended length...HKP-17631-M$24.95