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 Rear Sight Tool - Diopter Sights
HKP HK Parts
Now: $23.96Was: $29.95HK Diopter Rear Sight Tool - Military Contract Diopter sight tool is perfect for those that need to adjust all sizes of HK diopter type sights for the entire family of HK rifles including clones. A...HKP-16511Now: $23.96Was: $29.95 -
Out Of Stock
HK VP, USP, P30, P2000, HK45 Roll Pin
H&K Heckler & Koch
$2.95HK German Roll Pin German HK roll pin is crafted from a process using rolled spring steel resulting in robust part with stable fitment. HK suggests replacing the roll pin with a new unit each time...HKP-01921$2.95 -
HK MP5 Magazine Spring - 30 Round
H&K Heckler & Koch
$6.95HK MP5 30 Round Magazine Spring - German The MP5 30-round spring is a must-have replacement spring for all HK MP5 curved magazines. HK factory springs have been known to help cure worn, weak, or...HKP-00089$6.95 -
HK USP, HK45C, P2000 Magazine Release - Extended
H&K Heckler & Koch
$29.95Heckler and Koch Extended Magazine Release for HK45C, HK USP, and HK P2000 This mag release makes it possible to release the magazine without changing the position of your grip. Compatible With All HHKP-01669$29.95 -
HK MP5 .22LR Drum Magazine - 50 Round - Translucent
BDM Black Dog Machine
$99.95HK MP5 .22 50 Round Drum Magazine For The MP5-A5 & MP5-SD .22 Rifle Made in the USA by BDM exclusively for HK Parts. Using an existing drum model that is tried and true. Compatible With:HKP-16235$99.95 -
HK MP5, HK90 Series Ejector Lever Axle - US
HKP HK Parts
$9.95US Ejector Lever Axle This US ejector lever axle pin holds the ejector lever in place in the trigger pack. Made out to HK spec for the best US replacement part on the market. The best replacement for...HKP-20630$9.95 -
On Sale
HK416, Colt M4 Spring Kit - .22LR - Match Trigger Upgrade
HKP HK Parts
Now: $14.00Was: $17.49HK 416 .22 & Colt M4 .22 Match Trigger Spring Kit - Set of 3 Enhanced Springs: The HKP match trigger spring kit delivers a lighter, smoother, and crisper trigger pull translating to on-target...HKP-17340Now: $14.00Was: $17.49 -
HK MP5 Optic Mount - Trijicon RMR, Holosun, Swampfox
HKP HK Parts
$97.95HKP HK Parts HK MP5 Mount - Optic - Holosun, RMR Quickly attach any RMR pattern red dot sight to your MP5 platform firearm with the HKP optic mount. Our 3-piece mount installs securely to the...HKP-20731-M$97.95 -
On Sale
HK MP5 Folding Brace
SB Tactical
Now: $107.96Was: $119.95SB Tactical Side Folding Brace for the HK MP5 and SP5 model SBT5A Features: Each brace comes assembled ready to inHKP-18017Now: $107.96Was: $119.95 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 9mm - 30 Round - Molykote® - Seconds
Other
Now: $25.95Was: $36.95Turkish Contract MP5, SP5, MP5K, SP5K 9mm Molykote® 30 Round Magazine - Seconds Turkish contract 30 round 9mm magazine for HK MP5 and MP5K pattern firearms. Finished with Molykote®, a specialty...HKP-22559Now: $25.95Was: $36.95 -
On Sale
HK MP5, SP5K Magazine Loader and Unloader - Curved 9mm
Maglula
Now: $24.71Was: $29.95Maglula Mag Loader/Unloader When using this part, the magazines can be loaded in 1/3 (60% less) of the time than loading by hand; this equates to more time shooting and less time loading. Features:HKP-14546Now: $24.71Was: $29.95 -
On Sale
HK Gen 1 Spring Upgrade - Roller Retainer Plate
HKP HK Parts
Now: $7.96Was: $9.95HKP 1st Gen Roller Retainer Plate To Spring Upgrade This action 3 roller retainer spring for all 1st Generation bolt heads replaces the oval-shaped roller retainer plate. HK made a wire spring as an...HKP-02119Now: $7.96Was: $9.95