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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HK MP5, HK90 Series Hammer - Full Auto - Used
H&K Heckler & Koch
$29.95Hammer, Full Auto HK 90 Series Trigger Packs - German HK - Used German HK Hammer- used, surplus in VG-EXC shape and in perfect working order. This hammer is the hammer that is most commonly used in semi auto trigger packs as the secondary sear catch is...HKP-21442$29.95 -
On Sale
IMI 32 Round UZI Magazine - LIKE NEW
IMI
Now: $32.95Was: $44.95Uzi 32 Round 9mm Magazine - Like New - IMI Licensed - Mec-Gar Manufacture Made in Italy by the renowed Mec-Gar magazine manufacturing company with IMI Licensing. An all steel production and a blued finish to help protect it against rust. These are the...HKP-21231Now: $32.95Was: $44.95 -
SL8, G36 Bolt Hold Open Lever - Extended - HKP
USA
$59.95SL8 & G36 Extended Bolt Hold Open Lever New SL8, G36, HK243 bolt hold open lever. A must have upgrade for your HK SL8, Sl8-G36 conversion or G36 firearm. The bolt hold open lever is a drop in replacement and requires zero gunsmithing or alterations...HKP-18775$59.95 -
Out Of Stock
HK P2000, USPC Magazine with Extension, Complete - 18 Round
HKP HK Parts / Heckler & Koch
$79.95HKP HK Parts and Heckler and Koch 13 Round Magazine with +5 Extension for HK P2000 and HK USPC HK P2000 +5 magazine extension coupled with a new full-size HK P2000, 13 round magazine. Each unit is then fully assembled as an 18 round HK P2000 magazine...HKP-18662-M$79.95 -
HK USP Jet Funnel Magazine Spring - 9mm, .40 S&W
H&K Heckler & Koch
$9.95Heckler and Koch Jet Funnel 9mm and .40 S&W for HK USP Magazine Spring Latest Production Longer, Stronger Spring for All HK Jet funnel Magazines. Limited supplies are available on this hard-to-find spring. Great replacement for all HK...HKP-02508$9.95 -
HK MP5, HK90 Series Selector Lever - Ambi - Right Side
H&K Heckler & Koch
$89.95Heckler and Koch Ambidextrous Selector Lever - Right Side This is the right-side selector of the ambidextrous trigger packs. This part will only work on ambidextrous style or pictogram style housing and trigger packs. New HK German manufactured...HKP-00127$89.95 -
HK416, MR556 ARC-Fire Trigger - 3-Position - Ambi Controls
AS Designs
$297.95HK416, MR556 3-Position ARC-Fire Trigger with Ambidextrous Controls AS Designs' ARC-Fire (Active Reset Clutch) trigger is an innovative take on forced reset triggers. The trigger is reset immediately after each shot, resulting in rapid follow-up...HKP-22429$297.95 -
Pistol Stabilizing Brace - SBA4
SB Tactical
$124.99SB Tactical SBA4 Pistol Stabilizing Brace Designed for all platforms capable of accepting a mil-spec carbine receiver extension. The SBA4 is 5-position adjustable and features an integral, ambidextrous QD sling socket. Compatible With: HK MR556...HKP-19927$124.99 -
HK USPC Flashlight Mount - Adapter
GG&G
$69.95GG&G HK USPC Pistol Flashlight Adapter With a large number of flashlights and lasers that fit on a Picatinny or MIL-STD-1913 rail, GG&G has designed and manufactured an HK USP compact flashlight mounting rail adapter meeting the Picatinny Rail...HKP-01106$69.95 -
HK91, G3, PTR Central Buttstock Section - OD Green - Used
H&K Heckler & Koch
$5.99H&K HK G3, HK 91, PTR Central Buttstock Section - OD Green - Used USED German G3, 91, PTR Central Butt stock Section- Green in color. This stock section is no longer being manufactured as the HKG3, HK91 are out of production. Each surplus section is...HKP-17139$5.99 -
HK USP, USP Compact Match Hammer
H&K Heckler & Koch
$103.95HK Match Hammer This is the factory-correct match hammer marked with the factory-correct "S" marking on the left-hand side of the hammer. Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W...HKP-02602$103.95 -
HK45 Magazine with Extension - 15 Round
HKP HK Parts / Heckler & Koch
$113.95HKP HK Parts and Heckler and Koch 15 Round Magazine for HK45 HK45 and HK45 tactical +5 magazine extension coupled with a new HK German 10 round HK45 magazine. Each unit is then fully assembled as a 15 round magazine. Ideal for competition shooters that...HKP-20788$113.95