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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HK91, G3 Cocking Tube
H&K Heckler & Koch
$134.95HK German G3, 91, PTR Cocking Tube This is the factory-new part straight from HK Germany, and it is heat treated with the proper ribbed cocking tube extrusion. No longer in production and not POF or other low-quality production. HK G3 HK 91 PTR-91...HKP-01041$134.95 -
HK91, G3 Ejector Lever
H&K Heckler & Koch
$24.95New H&K .308 Ejector Lever Genuine HK German part. Compatible With: HK G3 HK 91 PTR-91 HK 51HKP-00832$24.95 -
HK VP9, VP40 Magazine Release - Enhanced
HKP HK Parts
$49.95Enhanced Magazine Release - Alloy - HK VP Series The oversized magazine release increases the overall surface area and makes it possible to release the magazine without changing the position of your grip. Made in the USA from 6061 billeted aluminum...HKP-21099-M$49.95 -
On Sale
HK VP9SK Rail Mount Compensator
HKP HK Parts
Now: $74.96Was: $169.95HKP HK VP9SK Rail Mount Compensator Specifications: Length - 3 1/2 inches Height - 1 3/4 inches Weight - 4.8 oz. Torque: Bottom Screws - 26 inch-lbs Side Screws - 18 inch-lbs Not to be used with a threaded barrel DISCLAIMER: Improper installation...HKP-20037Now: $74.96Was: $169.95 -
HK VP9, Tactical Bench Mat
HKP HK Parts
$13.95HK VP9, VP9 Tactical Gunsmithing Bench Mat This isn't your ordinary gun cleaning mat. Show your pride for your HK VP9 firearm while using our high quality neoprene rubber backed and cloth topped gun cleaning mat to protect your gun bench, desk, kitchen...HKP-17106$13.95 -
HK91, G3 Cocking Handle - Compliant - US
PTR
$25.95HK U.S. Made Cocking Handle - PTR Manufactured Compliant parts are hard to find and important for keeping your HK G3 and HK 91 build 922r compliant.HKP-00376$25.95 -
HK91, G3 Rear Sight - Surplus
H&K Heckler & Koch
$14.95HK German G3, 91, PTR Rear Sight Assembly Good - Very Good HK German factory sight. We offer the finest used German HK sights at the BEST price in the country. Each German HK used sight was hand selected & picked from to be the finest examples of all...HKP-18092$14.95 -
HK45, USP, P30, P2000 Hammer Spring - 12LB Stock
H&K Heckler & Koch
$5.9512LB Stock Hammer Spring This is the spring used in some custom trigger jobs, along with other trigger return and firing pin block springs. This spring can be used on the P30 along with the light trigger return spring and light firing pin block...HKP-01284$5.95 -
M-LOK Rail Section - 5 Slot
Magpul
$18.95Magpul M-LOK 5 Slot Rail Section Designed for use with all M-LOK compatible Hand Guards and Forends, M-LOK Aluminum Rail Sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined...HKP-19568$18.95 -
HK MP5, GSG-5, GSG-522, GSG-5PK Optic Mount
MFI
$109.95MFI HK Low Profile Scope Mount The MFI low profile scope mount was designed exclusively for the GSG-5, Umarex, and HK MP5 .22 models. The MFI mount takes less than 3 minutes to mount on your rifles or pistols. Compatible With: GSG-5,...HKP-01545$109.95 -
On Sale
HK USP45, Mark 23 +10 Magazine Extension
HKP HK Parts
$44.59 - $69.95Magazine Extension - +10 - HK USP .45 & Mark 23 Easy to install. Simply add the mag extension to your existing mag body and follower. No gunsmithing needed. Made 100% in the USA out of aircraft-grade hard coat anodized aluminum with steel hardware...HKP-21371-M$44.59 - $69.95 -
HK MP5 Magazine Release - Extended Streamline - EMR
HKP HK Parts
$44.95HKP HK Parts Extended Magazine Release - EMR - Streamline for HK MP5 Elevate your paddle style mag release with the streamlined extended mag release. Crafted from a solid billet of aircraft-grade aluminum and featuring a hard anodized finish,...HKP-22175-M$44.95