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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HK45C, USPC Magazine Floorplate - .45 ACP - 8 Round - Rubberized
H&K Heckler & Koch
$19.95H&K 8 Round HK USPC/45C 45 Magazine Floorplate This item is the new rubberized version, built to reduce breakage when dropped. Compatible With: HK45C 8 Rounds USPC 8 RoundsHKP-02212$19.95 -
Out Of Stock
HK USP Recoil Spring Washer Retainer - Front
H&K Heckler & Koch
$14.95H&K HK USP Recoil Spring Washer Retainer This is the tapered washer that supports and keeps the recoil spring centered and captive on the recoil rod itself. Compatible With: HK USP 9mm HK USP .40 HK USP .45 HK USP Tactical Models HK Elite, Expert,...HKP-17060$14.95 -
HK91, G3 Bolt Carrier - Full Auto - Tungsten Filled - Surplus
H&K Heckler & Koch
$249.95HK Factory F/A Tungsten Filled Bolt Carrier Used German Surplus The tungsten upgrade is ideal for those with bolt bounce issues or who want the smoothest carrier for FA use. These carriers are all used and in good shape and need to be refinished...HKP-01998$249.95 -
HK91, G3 A2 Fixed Buttstock - Alpine Green - Surplus
H&K Heckler & Koch
$29.95HK German Surplus G3, 91, PTR Stock Complete - Alpine Green The Alpine green stock was the last version that the German military produced and is the darkest green version available. All stocks are 90's production, date coded and made by HK for the...HKP-17112$29.95 -
Ergo Sling Loop Rail Mount- Ambidextrous
Ergo
$29.95Ergo Sling Loop Rail Mount- Ambidextrous The ergonomic HK slide mount sling hook base provides an economical means for attaching an HK-style sling hook to all 1913 Picatinny rails. Perfect for mounting on a tactical rail system or other Picatinny forearm...HKP-14526$29.95 -
HK MP5, MP5K Rear Sight Base - Billeted
HKP HK Parts
$17.95HKP HK Parts Billeted Rear Sight Base - Weldment for HK MP5 and HK MP5K All steel HK MP5, MP5K billeted rear sight base. The most correct MP5, MP5K rear sight base available. The only billeted factory correct sight base with the factory HK German side...HKP-18087$17.95 -
HK MP5K, SP5K-PDW, SP89 Binary Trigger Group - Ambi - BFSIII - 9mm
FA Franklin Armory
$849.95Franklin Armory HK MP5K-AR Binary Trigger Group Introducing our new MP5K-AR Navy ambidextrous lower housing, paired with a Franklin Armory Binary Trigger pack and a Magpul MOE grip for a complete MP5K-AR Binary Trigger group. This drop-in unit fits all...HKP-21337-M$849.95 -
HK VP9 R3d 2.0 Night Sights
XS Sights
$139.95XS Sight Systems HK VP9OR R3d 2.0 Night Sights - Suppressor Height R3D 2.0 sights are the premium solution for a traditional notch and post-sighting system. The set is engineered to provide a brighter, stronger, and easily installable sighting system for...HKP-21203-M$139.95 -
HK P30SK Holster - DCH Comp Carry
Comp-Tac
$79.95Comp-Tac HK P30SK DCH Comp Carry Holster Comp-Tac P30SK comp carry DCH (Dual Concealment) holster. This holster is compatible with our Rail Mount Compensators and Match Weights. The best holster for that offers IWB or OWB option Features: Offers IWB and...HKP-20587-M$79.95 -
HK VP9, VP40 Grip Panel Left Side - Medium
H&K Heckler & Koch
$17.95H&K VP9, VP40 Grip Panel Left Side - Medium - Black New HK German manufactured. Left side medium size perfect for spare or for custom stippling projects. Drop-in part for your HK VP pistol. Compatible With: HK VP9 HK VP40 HK VP9A1 F HK VP9A1 KHKP-16806$17.95 -
HK416, MR556, AR15 Stock Wrench
Tapco
$32.95Tapco HK 416, MR556, & AR15 Stock Wrench This tool includes a Mil-Spec castle nut wrench, a standard-length receiver extension removal wrench, and an A1/A2 Flash Suppressor wrench. This offers an improved grip, and each tool has a...HKP-02407$32.95 -
HK German Universal Multi Tool
H&K Heckler & Koch
$79.95H&K German Universal Multi Tool This is ideal for the USC or SL8 style of weapon systems. Great multi-tool for sights, handguards, or work on any other accessories.HKP-00374$79.95