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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HK416, MR556 Buffer Spring - Enhanced
H&K Heckler & Koch
$19.95Heckler and Koch's Enhanced HK416 and HK416 Buffer Spring - HK German The HK MR556/416 buffer spring will also work with other AR-15 and M-16 rifles. It is a high-wear item and a must-have replacement part. Compatible With: HK416, MR556 HK416 A5 HK...HKP-00039$19.95 -
HK UMP, B&T APC Folding Buttstock
H&K Heckler & Koch
$138.95HK German UMP Folding Buttstock Brand new German HK folding stock. This is a required part for the USC-UMP Conversion using the (stock block B). All UMP folding buttstocks come with an HK date code. Compatible With: HK UMP HK USC-UMP...HKP-00252$138.95 -
HK Armorer's Tool Kit
HKP HK Parts
$67.95HKP Armorer's Tool Kit Includes: HK Parts Armorers Puck Punch Bench Block Tool 8 Piece German Rennsteig punch set 20 Piece German Feeler gauge setHKP-18659$67.95 -
HKP 9mm Vented Micro Comp - Threaded 1/2x28 RH
HKP HK Parts
$29.95HKP 9mm Vented Micro Comp - Threaded 1/2x28 RH The HK Parts Micro Comp and Thread Protector is designed to be lightweight and functional as both a compensator and thread protector. The HK Parts Micro Comp easily attaches to the end of any factory spec...HKP-19721$29.95 -
HK UMP, USC Rail Section - Hardware Included
UTG
$24.95UMP, USC Side, Bottom Rail With Mounting Hardware - Aluminum Listing is for one rail. The UMP/USC can use up to 3 of the rails on the forearm section of the firearm. 1 each for the sides and 1 for the bottom for a total of 3 rails. Each rail is made from...HKP-00598$24.95 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 9mm - 30 Round - Molykote® - Seconds
Other
Now: $29.95Was: $36.95Turkish Contract MP5, SP5, MP5K, SP5K 9mm Molykote® 30 Round Magazine - Seconds Turkish contract 30 round 9mm magazine for HK MP5 and MP5K pattern firearms. Finished with Molykote®, a specialty anti-friction coating formulated to help reduce...HKP-22559Now: $29.95Was: $36.95 -
HKP 9mm Micro Comp - Threaded 13.5x1 LH
HKP HK Parts
$29.95HKP 9mm Micro Comp - Threaded 13.5x1 LH This lightweight micro comp functional as both a compensator and thread protector. The HK Parts Micro Comp easily attaches to the end of any factory spec 13.5x1 9mm barrel. It was developed to provide concealed...HKP-19849$29.95 -
Pistol Rug Case - Bundesadler
HKP HK Parts
$19.95HKP Pistol Rug - Bundesadler Keep your handgun safe with the HK Parts pistol rug featuring the iconic German Bundesadler crest. This heavy duty pistol case will accommodate one pistol and up to 5 magazines. Features: Measures 8x13" closed and...HKP-21014-M$19.95 -
HK MP5, SP5K, SP89, Optic Mount Bundle - Holosun Reflex X2
Holosun
$394.95Holosun X2 - Red 2 MOA Dot & 32 MOA Circle - Optic Mount - Bundle - HK MP5 Includes: (1) Holosun Reflex X2 MRS Red Solar (1) MP5 RMR Optic Mount The finest mounting solution to properly mount your RDS on your MP5 or any other receiver...HKP-20735$394.95 -
Out Of Stock
HK G36, G36C, G36K, SL8 Barrel Wrench
$139.95Barrel Wrench for HK G36, G36C, G36K, SL8 Barrel wrench designed for all HK G36 and SL8 barrel lengths, from the 9" G36C to the 20" SL8. The tool uses a 3-point contact system for secure engagement and proper torque transfer on the barrel nut. A 3/8"...HKP-00283$139.95 -
HK MP5, MP5K Optic Mount - Raised - Picatinny - US
HKP HK Parts
$109.95HKP HK MP5 Picatinny Rail Optic Mount HK Parts Picatinny style optic mount for the MP5 or MP5K. Quickly mount any Picatinny optic to your HK while retaining a full view of the factory sights. Available exclusively at HK Parts. Compatible With: HK...HKP-21489$109.95 -
HK P7 Series 4 in 1 Gas Cylinder Cleaning Tool
USA
$21.95P7 Series 4-In-1 Gas Cylinder Cleaning Tool Made from stainless steel and hand-fitted for perfect fitment on each P7 pistol. Each tool features a 4-in-1 (seven tool) and includes a precisely sized tip for grip screw removal, a gas cylinder...HKP-02080$21.95