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 MP5K Brace or Stock Adapter - Folding
HKP HK Parts / SB Tactical
$79.99SB Tactical HK MP5K Folding Brace/Stock Adapter Factory SB Tactical adapter for folding pistol brace. Aluminum with hard coat anodize for the ultimate finish. Features: Seamless styling adds elegance & operator utility Quick and easy H buffer...HKP-21413$79.99 -
$3.95 -
HK SL8, 36 Extended Bottom Rail Kit
H&K Heckler & Koch
$99.95H&K HK SL8, HK G36 Extended Bottom Rail Kit This rail is the factory correct HK German manufactured bottom rail for the G36 or SL8 rifle. This allows the longest rail on the bottom of the polymer forearm. 9.25" in length overall. Comes with all...HKP-16549$99.95 -
Out Of Stock
HK45, HK45 Compact V3 Left Side Decock Only Lever
H&K Heckler & Koch
$49.95Decock Lever ONLY For Left Side Of Frame - HK45, HK45C This control lever is for those who are right-handed and want the control lever on the left-hand side of the frame with the decock function only. Compatible With: HK45, HK45...HKP-02706$49.95 -
$4.95 -
HK Mark 23 Tactical Barrel - .45 ACP - 6.02" - Threaded .578x28 RH
RCM
$289.95RCM HK Mark 23 .45 ACP Tactical Barrel - Threaded .578x28 RH This HK Mark 23 tactical threaded barrel designed for compatibility with various flash hiders and sound suppressors. Unlike the factory HK Mark 23 barrel with 16x1 RH threads, this barrel...HKP-17444$289.95 -
HK P Series LEM Hammer
H&K Heckler & Koch
$65.95H&K HK P Series LEM Hammer Factory HK German hammer. Compatible With: HK P30 P30L P30SK HK P2000 P2000SKHKP-15436$65.95 -
HK45, HK45 Compact, USP, USPC Sear Roll Pin
H&K Heckler & Koch
$5.95Sear Roll Pin HK USP 9mm .40 S&W .45 ACP HK USP Compact 9mm .40 S&W .357 SIG .45 ACP HK45 HK45 CompactHKP-01815$5.95 -
HK G36, SL8 Extractor
H&K Heckler & Koch
$79.95G36 & HK SL8 German Extractor For Bolt Head New HK German. This is a great item to keep as a spare. Compatible With: All G36 Variants SL8-1, SL8-6HKP-00287$79.95 -
HK91, G3 Bolt Head Complete - US Made
$149.95Bolt Head - Complete This item is a complete bolt head using a combination of new HK German and New US-made parts. This part counts as 1 US-made compliant part for the 922r compliance. Compatible With: HK 91 HK G3 PTR-91 SAR3/8 Other HK .308 Clones or...HKP-00839$149.95 -
HK94, HK93 Semi Grip Frame SEF - Metal
HKP HK Parts
$189.95HK MP5,94, 33,93 Style Metal Grip Frame For Semi Auto Shelves Each German HK housing started out as a factory HK German select fire metal housing. Each housing was modified by welding in a factory correct semi auto shelf, clipped from a double tang...HKP-16470$189.95 -
Magpul RSA - Rail Sling Attachment
Magpul
$29.95Magpul RSA - Rail Sling Attachment Attaches to Picatinny rails for an additional point of attachment for slings.HKP-02423$29.95