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
Century Arms AP5 Flash Hider
MKE
Now: $63.97Was: $79.95MKE AP5 Flash Hider - 3-Lug This 3-lug flash hider is perfect for Century Arms AP5. Specifications: Made in Turkey by MKE Tri-lug quick disconnect mountinHKP-21185Now: $63.97Was: $79.95 -
HK USP, USP Tactical Magazine Spring - .45 ACP - 12 Round
H&K Heckler & Koch
$5.95HK Pistol Magazine Spring This is a must-have spare part for all HK pistol owners. HK recommends that for optimum performance, you change out the magazine springs often and swap them regularly when...HKP-01426$5.95 -
HK MP5, HK33, HK53, HK93 Housing - SEF Navy Style - Polymer - Push Pin - 9mm, 5.56 / .223 - USED
H&K Heckler & Koch
$64.95H&K Heckler and Koch USED SEF Navy Style Polymer Housing Push Pin for HK MP5, HK33, HK53, HK93 9mm and 5.56 / .223 With the availability of available grip frames being hard to find these days. HK...HKP-19802$64.95 -
HK45, P30, P2000 Backstrap Roll Pin
H&K Heckler & Koch
$5.95HK P30, 45, & P2000 Backstrap Roll Pin This is the commonly replaced roll pin for the rear backstrap that you can swap and change to different sizes. Great spare to have on hand when doing...HKP-02274$5.95 -
HK UMP 9mm 30 Round Magazine
HKP HK Parts
$49.95UMP 9mm 30 Round Factory Magazine - USA UMP 30 round magazine for the UMP. Each magazine features enhanced steel feed lips, and a 30 round magazine capacity. Each magazine counts as 3 U.S. Made...HKP-17701$49.95 -
HK MP5, HK53 Locking Roller for Bolt Head - 9mm - 8.02mm
H&K Heckler & Koch
$39.95H&K +2 Roller For Bolt Head 8.02mm - Over-sized New HK standard (8.02 mm) locking roller. The proper roller size is essential for a proper bolt gap. New HK German, not surplus or used out-of-spec...HKP-00507$39.95 -
HK USP45, Mark 23 Magazine, Complete - 22 Round
HKP HK Parts / Heckler & Koch
$149.95HKP and HK .45 ACP 22 Round Complete Magazine for HK Mark 23 and HK USP HK Parts takes an existing 12 round mag the +10 mag extension and assembles themHKP-21372-M$149.95 -
HK USP Pistol Armorers Manual
H&K Heckler & Koch
$19.95HK USP Pistol Armorers Manual Each manual has 34 pages in total and fully covers the USP better than any other manual available. Also contains parts numbers and many diagrams. This is the newest USP...HKP-00725$19.95 -
HK P2000SK Magazine Floorplate - 9mm / .40 S&W - 9,10 Round - Low Profile
H&K Heckler & Koch
$24.95New HK German P2000 SK Magazine Flat Floor plate Low profile style without the finger rest and best for concealed carry or a low profile. This is the perfect upgrade for those who want a slim profile...HKP-01676$24.95 -
On Sale
Picatinny Rail for HK Receivers - 13 Slot
HKP HK Parts
Now: $42.37Was: $52.95HKP Picatinny Rail For HK Receivers - 13 Slot Mil-Spec all steel CNC'ed picatinny rail in the white, relief cut to fit flush and low profile on HK receivers. The most solid and consistent mounting...HKP-18238Now: $42.37Was: $52.95 -
Out Of Stock
HK33, HK53, HK93 Magazine - 40 Round - Used
H&K Heckler & Koch
$80.00HK33, HK53, HK93 Magazine - 40 Round - Used - Genuine German HK HK Factory German 40 round surplus magazine. This factory magazine is long since out of production and is made from aluminum, steel...HKP-19761$80.00 -
On Sale
HK91, G3 Handguard - M-LOK
HKP HK Parts
$101.97 - $169.95HK G3, HK91 & PTR Low Profile M-LOK Forearm The HKP M-LOK tactical handguard installs easily to provide a solid base to mount M-LOK accessories. Designed from the ground up by HK enthusiasts with...HKP-17265-M$101.97 - $169.95