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 MP5/SP5 Universal SEF Housing - Like New
H&K Heckler & Koch
$149.95H&K MP5/SP5 SEF Universal Housing - Clipped & Pinned - Like New The ultimate solution for MP5 and SP5 style receivers, this universal trigger housing simplifies swapping between receivers. German HK-manufactured, it allows you to easily transfer...HKP-21779$149.95 -
HK SP5 ACR Stock or Brace Adapter
HKP HK Parts
$139.95HKP HK SP5 ACR Stock or Brace Adapter This adapter allows the ACR stock to be fully compatible with the SP5 and in-spec MP5 platforms. It’s built from aircraft-grade aluminum with a pre-installed buffer for a straightforward, drop-in conversion...HKP-21519$139.95 -
On Sale
Glock 9mm +3 Magazine Extension
Tactical Precision MFG
Now: $16.46Was: $39.95TPM Glock 9mm +3 Magazine Extension This extension is made from machined 6061 aluminum. This magazine extension will increase the capacity, reload speed, mag drops, and overall functionality of your pistol. Available in various colors to customize to...HKP-21136-MNow: $16.46Was: $39.95 -
HK P2000 Holster - Comp Carry
Comp-Tac
$89.95Comp-Tac HK P2000 Comp Carry Holster This holster is manufactured by the best holster company in the business, Comp-Tac, specifically for use with the HK Parts compensators. This holster is based on the ever-popular Comp-Tac International holster and...HKP-21118-M$89.95 -
Out Of Stock
HK VP9SK Tactical Barrel - 9mm - Threaded 13.5x1 LH
RCM
$225.00RCM HK VP9SK 9mm Tactical Barrel - Threaded 13.5x1 LH Each VPSK Tactical barrel is machined from ordnance grade steel, heat treated then nitrided inside and out. This is the finest threaded replacement barrel for the HK VP9SK 9mm pistol, ideal as...HKP-19262$225.00 -
HK VP9, VP40 Disassembly Lever Spring
H&K Heckler & Koch
$5.95Catch Spring For Disassembly Lever HK VP9, HK VP40 Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP40HKP-16786$5.95 -
Out Of Stock
HK417, MR762 Handguard - Picatinny Quad Rail - 9"
H&K Heckler & Koch
$393.95H&K MR762/417 Picatinny Quad Rail Handguard - 9" Factory HK German MR762, HK417 handguard with mounting screws. Compatible With: HK MR762 A1, A4 HK417 MR308HKP-16629$393.95 -
Out Of Stock
HK USPC HD Night Sight - Yellow,Green
Trijicon
$159.00Trijicon HK USPC HD Night Sight - Yellow/Green The three-dot green tritium night sight set front sight features a taller blade and an aiming point ringed in photoluminescent paint, while the rear sight is outlined in black and features a wider U-shaped...HKP-14544$159.00 -
HK416, MR556 Adapter - Muzzle Brake or Suppressor - 1/2x28
Surefire
$165.00Surefire (5.56/.223) Muzzle Brake/Suppressor Adapter - Threaded 1/2x28 The SureFire muzzle brake is designed for M4, M16, HK 416, and MR556 weapons with 1/2-28 muzzle threads. It significantly reduces recoil impulse and muzzle rise, enhancing...HKP-17378$165.00 -
HK416, MR556 Butt Pad - German E2 -Concave
H&K Heckler & Koch
$55.95H&K HK MR556/MR762/416/417 German E2 Concave Butt Pad Can be added as an option on the HK E1 416/417 stock. Providing you an option to use either the concave or convex style buttpads for different mission requirements. Compatible With: HK MR556 HK...HKP-00050$55.95 -
HK416, MR556, HK417, MR762 Disconnector
H&K Heckler & Koch
$18.95Heckler and Koch HK416, MR556, HK417, MR762 Disconnector for Lower New HK German manufactured part. This is the latest generation of HK disconnector for the HK MR and HK HK416 and HK417 family of firearms. Compatible With: HK416, MR556 HK417,...HKP-02674$18.95 -
HK UMP, USC Sight Support Roll Pin - Rear
H&K Heckler & Koch
$9.95HK UMP & USC Rear Sight Support Roll Pin This is the axle pin that holds the rear sight assembly to the rear sight housing of the receiver on the USC or UMP firearm.HKP-02155$9.95