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
Thread Protector - 9mm, 5.56 / .223 - 1/2x28 RH
HKP HK Parts
Now: $11.96Was: $14.95HKP (9mm) Thread Protector For Barrels - Threaded 1/2x28 A must-have accessory to safeguard the threads on your threaded barrel, this thread protector is the finest available. It is the standard...HKP-02646Now: $11.96Was: $14.95 -
HK VP9, VP9SK, VP40 Enhanced Slide Cap - Red
HKP HK Parts
$29.95Enhanced Slide Plate Cover VP9, VP9SK & VP40 - HK Red Enhanced HK VP9, VP40 Alloy Slide Plate. This enhanced model covers has no firing pin viewing window and is enlarged as MUCH as possible to seal...HKP-17857$29.95 -
HK45, HK45C, USP Roll Pin - Ambi Control Lever
H&K Heckler & Koch
$2.95Heckler and Koch HK USP, HK45, and HK45C Ambidextrous Control Lever Set Roll Pin This item is to hold the right side lever onto the left side axle lever. These can easily be lost or damaged...HKP-02394$2.95 -
Out Of Stock
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: HKHKP-02602$103.95 -
On Sale
HK51, PTR PDW Backplate With Recoil Rod
PTR
Now: $82.46Was: $149.95HK51, PTR PDW Backplate With Recoil Rod Each unit has been built with new HK parts and painted HK black, ready for use. The PTR PDW is the collapsible recoil-style assembly designed for use on...HKP-02665Now: $82.46Was: $149.95 -
HK91, G3 Grip Housing - SEF - Clipped and Pinned- Polymer - USED
H&K Heckler & Koch
$79.95H&K G3/91 (7.62x51/.308) SEF Polymer Housing - USED - Clipped & Pinned This German made Heckler & Koch G3 surplus grip housing comes in black polymer clipped & pinned, ready to drop on your HK 91, HK...HKP-00722$79.95 -
HK G3K Locking Piece #18 - 50 Degree
RCM
$49.95RCM HK G3K Locking Piece #18 - 50 Degree The #18 LP is the factory-correct locking piece for G3K style builds or other custom builds. The locking piece is the timing mechanism that a delayed roller...HKP-02522$49.95 -
HK MP5K 9mm SEF Trigger Group Navy Style- Full Auto - Push Pin - Used
H&K Heckler & Koch
$499.95HK German MP5K SEF Navy Style F/A Trigger Group Complete - Used ON SALE FOR A SPECIAL PROMOTION WHILE SUPPLIES LAST!!! Each trigger group is comprised of genuine Heckler & Koch products Includes:HKP-18095-PP$499.95 -
On Sale
HK45 +5 Magazine Extension Kit
HKP HK Parts
Now: $41.41Was: $64.95HKP HK45 +5 Magazine Extension Kit HK Parts magazine extension +5 kit adds 5 additional rounds to the HK45 magazine with the simple swap of the floor plate & high-reliability mag spring. HKP highly...HKP-20809-MNow: $41.41Was: $64.95 -
HK MP5 Ejector Lever - .40 S&W, 10mm
H&K Heckler & Koch
$38.74H&K Heckler and Koch German HK MP5 40, MP5 10mm Ejector Lever Get the ejector that is tried and true and the best upgrade you can make with your HK MP5 40 or 10mm. This is the finest and only ejector...HKP-00412$38.74 -
On Sale
HK MP5, SP5K Extractor - 9mm
MKE
Now: $15.96Was: $19.95MKE HK MP5/K 9mm Extractor Keep your MP5 or MP5K running strong with this MKE 9mm extractor. Perfect for replacing a worn part or completing a build, it’s made to HK specs for smooth, reliable...HKP-21919Now: $15.96Was: $19.95 -
Out Of Stock
HK VP Series F3 Trigger - Full Flat Face - Red
Lazy Wolf
$134.95Lazy Wolf VP F3 Full Flat Face Series Trigger - Red In a collaboration with Lazy Wolf Guns, HK Parts is offering aftermarket triggers for your HK VP9 & VP40 handguns. The drop in VP9 series trigger...HKP-19153$134.95