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 MP5K Handguard Conversion - SD Style
HKP HK Parts
$299.95HKP HK MP5K SD Handguard Conversion Transform your MP5K into a stunning MP5KSD with our revolutionary MP5K SD handguard conversion! This cutting-edge drop-in handguard is expertly designed to give your standard MP5K the iconic suppressed SD look...HKP-22201$299.95 -
HK CC9 Firing Pin Spring Retainer
H&K Heckler & Koch
$5.95H&K CC9 Firing Pin Spring Retainer Manufactured in Germany by H&K, this part secures the firing pin spring to the firing pin assembly, ensuring proper striker function during cycling. Compatible With: HK CC9HKP-22139$5.95 -
HK CC9 Firing Pin Spring
H&K Heckler & Koch
$5.95H&K CC9 Firing Pin Spring Manufactured by H&K, this firing pin spring for the H&K CC9 pistol applies consistent tension to the firing pin, ensuring reliable ignition. Compatible With: HK CC9HKP-22138$5.95 -
HK CC9 Magazine Catch
H&K Heckler & Koch
$16.95H&K CC9 Magazine Catch Genuine H&K magazine catch for the CC9 pistol engages and locks the magazine in place while allowing for the quick release during reloads. Compatible With: HK CC9HKP-22106$16.95 -
Out Of Stock
HK CC9 Disassembly Lever
H&K Heckler & Koch
$19.95H&K CC9 Disassembly Lever Made in Germany, this CC9 disassembly lever allows removal of the slide assembly from the frame for maintenance and cleaning. Compatible With: HK CC9HKP-22105$19.95 -
HK VP9 Slide Release Lever - Left - Anti-Skid
H&K Heckler & Koch
$74.95H&K VP Anti-Skid Slide Release Lever - Left Left side extended slide release lever. Can be combined with 260498, 50254710, 50239708. Compatible with: VP9 VP9L VP9 Match VP9 Tactical VP9SK VP9A1 VP40HKP-22011$74.95 -
HK416A5, MR556 Barrel - 5.56 / .223 - 11"
H&K Heckler & Koch
$424.95Heckler and Koch 11" Barrel for HK416A5, MR556 A4, MR556 A5 Factory German 11" HK416A5, MR556 barrel. Cold hammer-forged and built to HK’s standard for durability, accuracy, and service life. The 1:7 twist rate stabilizes a wide range of 5.56 NATO...HKP-21932$424.95 -
M-Lok Paraclip Sling Mount
Magpul
$19.95Magpul M-Lok Paraclip Sling Mount The M-LOK Paraclip Sling Mount is a steel clip-in sling mount for M-LOK compatible systems. It is constructed of high-grade, precision cast steel and has an extremely durable QPQ salt bath nitride finish. With a...HKP-21874$19.95 -
HK MP5K Optic Mount
HKP HK Parts
$97.95HKP HK MP5K Optic Scope Rail The HKP optic scope rail is designed to be welded to the top of the receiver to provide a secure Picatinny optic mount for your MP5K. Includes sight mount to retain the factory rear diopter sight. Compatible With: HK...HKP-21852$97.95 -
Out Of Stock
Picatinny Optic Mount - Holosun 510C, HM3X Combo
Holosun
$599.95Holosun 510C & HM3X Combo - Optic & Magnifier The HS510C is a versatile open reflex optic designed for long gun applications. HS510C is at home on carbines, PCCs, and shotguns due its durable design. HS510C features and aluminum housing...HKP-21657$599.95 -
HK G36, 36K NAR Mounting Rail
B&T Brugger & Thomet
$339.95B&T HK G36/G36K NAR Mounting Rail with Emergency Sight B&T NAR (picatinny compatible) mounting rail for HK G36/G36K with emergency sight. Compatible With: HK G36 HK G36KHKP-21529$339.95 -
HK UMP 5 Prong Flash Hider - 5/8x24
HKP HK Parts
$67.95HKP HK UMP 5 Prong Flash Hider - 5/8x24 Compatible With: HK UMPHKP-21523$67.95