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
HK51, PTR PDW Backplate With Recoil Rod
PTR
Now: $109.95Was: $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 HK51-style builds. This backplate will work on any fixed...HKP-02665Now: $109.95Was: $149.95 -
HK MP5, MP5K Soft Case - Load Out - 28"
HKP HK Parts
$79.95HK Parts Load Out Soft Case 28" long for storing your HK MP5 The HK Parts MP5 Load Out soft case was designed with versatility in mind. The case can be used to transport 1 or 2 MP5 platform firearms and up to 9 magazines securely in the included...HKP-21670$79.95 -
HK USP Compact Straight Trigger
Grayguns
$95.00Grayguns HK USP Compact Straight Trigger Designed by Keith Hosey, Grayguns’ director of gunsmithing, the HK USPC Straight Trigger is a first-of-its-kind. The trigger reduces over-travel while featuring a 90-degree optimal trigger break...HKP-21073$95.00 -
HK33, HK53, HK93, HK91, G3 Bolt Locking Lever Spring for Bolt Head
H&K Heckler & Koch
$4.95HK Bolt Carrier Bolt Locking Lever Spring New HK German factory bolt carrier locking lever spring for locking lever latch. Compatible With: HK G3, HK91 PTR models HK93, 33, 53 Other clones and custom buildsHKP-16274$4.95 -
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: German Full Auto trigger pack with all F/A...HKP-18095-PP$499.95 -
HK G3/HK91 Anti-Rattle Mag Release - Surplus
H&K Heckler & Koch
$24.95H&K HK G3, HK 91, PTR, HK 93, HK 53, HK 33 Anti-Rattle Mag Release - Surplus Pulled from demilled German HK firearms. Once refinished this item can be made to look like new. For install on all HK .223 & .308 HK Rifles. This is the highly desired...HKP-17855$24.95 -
HK416, HK417, MR556, MR762 Takedown Pin Detent Spring
H&K Heckler & Koch
$9.95H&K HK MR556/MR762/416/417 Takedown Pin Detent Spring New HK German manufacture. Detent spring for the rear takedown pin. Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-02541$9.95 -
Out Of Stock
HK416, MR556 Bench Mat
HKP HK Parts
$24.95HK MR556, HK 416 Bench Mat Our HK MR556, HK416 bench mat is the perfect cleaning & repair mat designed specifically for your Heckler & Koch MR556 & HK416 models. Have fun and learn while you work on your favorite H&K firearm. The soft top...HKP-17169$24.95 -
HK MP5K Bolt Group - Complete - 9mm - SA/FA
RCM
$394.95Complete Bolt Group - RCM - HK Style MP5K 9mm Ideal to replace out of spec, worn or broken bolt groups or for that custom build. Each bolt group is compatible with semi and full-auto MP5K 9mm style firearms. Each bolt group comes complete,...HKP-19846$394.95 -
Out Of Stock
HK45C Finger Rest Magazine Extension - +2
HKP HK Parts
$29.95HK45C 8 Round Magazine +2 Magazine Extension/Finger Rest All of the HK .45 cal mags will soon have a variety of mag extensions! More to come. HK45C 8 round +2 mag extensions. Replaces the floorplate for a +2 round addition for a total of 10 rounds in the...HKP-17999$29.95 -
Out Of Stock
HK91, G3, PSG1, HK11 Magazine - 50 Round Drum
HKP HK Parts
$359.95HKP 50 Round Drum HK91, G3, PSG1/MSG90, HK11 - 7.62x51/.308 Modeled after the discontinued HK G8 50 round drum, the HK Parts drum steps in where the original left off. Each drum is crafted in the US from billet aluminum with aluminum and steel...HKP-21615$359.95 -
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