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 Backplate and Recoil Rod Assembly Complete
H&K Heckler & Koch
$49.95HK German Backplate Assembly Complete: Excellent Refinished - German HK G3 backplate complete that has been refinished in black oxide. Great replacement for worn out or damaged backplates. Compatible With: G3 HK91 PTR 91 Custom clonesHKP-00355$49.95 -
HK Trigger Spring - Burst Trigger Packs
H&K Heckler & Koch
$8.95Burst Pack Trigger Spring - HK German New HK German trigger return spring used on all HK 90 series burst trigger packs. MP5, HK53, G3 burst, 2 or 3 round burst trigger packs.HKP-01450$8.95 -
HK MP5, MP5K, G36, HK33, HKK53, HK93, HK417 Magazine Release Bushing - Full Auto
MKE
$2.59MKE HK MP5/MP5K Magazine Release Bushing This part is for use in all 90-series H&K weapon systems and is used for installing a paddle mag release. This is not for use on semi-auto HK builds. This part is intended for full-auto conversions only...HKP-22283$2.59 -
HK USP, Mark 23 Magazine Extension Kit - .45 - +7
HKP HK Parts
$59.95HKP HK USP .45/MK23 - Magazine Extension Kit +7 HKP highly recommends using a magazine loader when loading ammunition into our extended magazines due to increased spring tension versus factory. Includes: +7 magazine extension Extra power enhanced...HKP-21513-M$59.95 -
HK416, MR556 Foregrip or Handstop - Angled - NAR Interface
B&T Brugger & Thomet
$50.00B&T Angled Foregrip / Hand Stop with NAR Interface A perfect solution for shooters who prefer an angled foregrip. The lugs at the end of the grip assure a firm rest for the supporting hand. The grip can be mounted easily onto any NAR/Picatinny rail...HKP-21416$50.00 -
HK MP5, SP5K Optic Mount - Trijicon RMR - 6.5 MOA
Trijicon
$619.95RMR Optic Mount - Bundle - HK MP5 Includes: (1)Trijicon RMR Type 2 Red Dot Sight 6.5 MOA Red Dot, Adjustable LED (1) MP5 RMR Optic Mount The finest mounting solution to properly mount your RDS on your MP5 or any other receiver that utilizes the...HKP-20734$619.95 -
HK UMP, B&T APC Side Folding Pistol Stabilizing Brace
SB Tactical
$74.95SB Tactical HK UMP Side Folding Pistol Stabilizing Brace A skeletonized version of the SBT Pistol Stabilizing Brace, the SBTi enhances your B&T APC or HK UMP with an integral, side-folding mechanism. The SBTi variant also allows you to customize the...HKP-19133$74.95 -
HK 45C, USPC Magazine Extension - 12 Round - Red
HKP HK Parts
$84.95HKP 12 Round HK 45C, HK USPC .45 ACP Magazine - Red HK Parts magazine extension +4 adds 4 additional rounds to the HK45C, 8 round magazine. Each unit is then fully assembled as a 12 round HK45C magazine. Ideal for competitive shooters, concealed carry or...HKP-18673$84.95 -
GSG9 HK G36 FBI 0,1 Lower Complete
GSG9
$399.95HK GSG9 G36, G36K, G36C - FBI (0,1) Lower New HK US FBI (0,1) G36 lower complete with internals. This is also a popular item for use on the SL8 to G36 conversions. Please note: Do NOT dry fire.HKP-20181$399.95 -
HK Mark 23 Ejector Roll Pin
H&K Heckler & Koch
$6.95HK Mark 23 Ejector Roll Pin The Mark 23 has been discontinued, and spare parts will become limited in time, so stock up now while we have these hard-to-find parts available.HKP-01816$6.95 -
HK P30SK, P2000SK Hammer Spring
H&K Heckler & Koch
$9.95HK German Hammer Spring This spring is used with LEM and all standard models. Compatible With: P2000SK P30SKHKP-02598$9.95 -
HK G36K Piston Rod Assembly, Complete
H&K Heckler & Koch
$89.95New Heckler and Koch German HK G36K Gas Piston Rod and Spring Assembly Great for spare parts or to use on that HK SL8-G36 conversion.HKP-00284$89.95