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 A3 Retractable Buttstock Buttpad
H&K Heckler & Koch
$24.95HK G3 & HK 91 A3 Retractable Stock Rubber Buttpad - German This item is a great spare itemsto have on hand as the factory buttpads found on used or surplus stocks are often worn or damaged. Made in Germany by H&K. Compatible With: New style HK...HKP-16853$24.95 -
HK33, HK53, HK93, HK91, G3 Anti-Rattle Mag Release
H&K Heckler & Koch
$64.95HK German Anti Rattle Paddle Magazine Release This item is a new H&K genuine part not used or surplus for installation on all HK .223 & .308 HK Rrifles. This is the highly desired anti-rattle-style paddle mag release. Compatible With: HK 91 HK...HKP-01126$64.95 -
HK MP5 Locking Roller -4 - .40 S&W / 10mm
H&K Heckler & Koch
$19.95HK German MP5 40/10 -4 roller Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for...HKP-00337$19.95 -
HK MP5 Trigger Group, Complete - SEF Semi Auto - Clipped and Pinned - .40 S&W / 10mm
H&K Heckler & Koch
$449.95HK German MP5 40, MP5 10mm SEF Clipped & Pinned Semi-Auto Trigger Group - Complete Ready to install on your HK clone or a custom build.HKP-00447$449.95 -
Out Of Stock
HK SP5K Spec Only 9mm 3 Position (0,1,F Pictogram) Ambidextrous Navy Style Housing - Clipped & Pinned
H&K Heckler & Koch
$399.95H&K SP5K Spec Only 9mm 3 Position (0,1,F Pictogram) Ambidextrous Navy Style Housing - Clipped & Pinned This HK German Navy housing is specifically designed for the HK SP5K. Featuring ambidextrous functionality and pictogram markings, this housing...HKP-17924$399.95 -
DTAC MP5K/SP89/SP5K 9mm Modular Handguard - KEYMOD
DTAC Dakota Tactical
$159.95DTAC MP5K/SP89/SP5K 9mm Modular Handguard - KEYMOD Features: Made in the USA (922r compliant part) KEYMOD accessory compatible 12 ergonomically placed slots for maximum versatility Exclusive extended forward accessory mounting 1-piece main body machined...HKP-17807$159.95 -
HK MP5, HK94, SP5K Rear Sight Drum and Base
H&K Heckler & Koch
$109.95H&K MP5, HK94, & SP5K Rear Sight Drum and Base This is an HK German part that's a great upgrade for the SP5, SP5K, and SP89 or MP5K models. We highly suggest adding the following items to complete the rear sight set that's not included. Sight...HKP-00073$109.95 -
HK XX Marked 9mm Strutted Hammer
H&K Heckler & Koch
$159.95HK XX Marked 9mm Strutted Hammer Compatible With: MP5, 94, SP5 MP5K, SP89, SP5K MP5 40, MP5 10 Clones or other custom buildsHKP-00148$159.95 -
On Sale
CZ Scorpion Stock or Brace Adapter - EVO Ace
HKP HK Parts
Now: $17.95Was: $39.95CZ Scorpion EVO Ace Brace/Stock Adapter The CZ Scorpion EVO ACE Stock Adapter allows you to upgrade your CZ Scorpion with any ACE Folding Stock/Brace or ACE Stock/Brace Accessories. Solid billet machined aluminum adapter anodized black in color.HKP-18523Now: $17.95Was: $39.95 -
HK MP5, AP5 30 Round Magazine Spring
MKE
$5.95HK MP5 30 round magazine spring - Turkey The MP5 30-round spring is a must-have replacement spring for all HK MP5 curved magazines. Compatible With: HK MP5 HK MP5K HK SP5 HK SP5K AP5HKP-22473$5.95 -
HK MR762 A4 Upper Receiver Kit - 13"
H&K Heckler & Koch
$2,499.95HK MR762 A4 Upper Receiver Kit - 13" The MR762 A4 kit contains a complete upper receiver and barrel assembly. The closed system design significantly reduces malfunctions typically associated with direct-impingement gas systems, as hot carbon fouling and...HKP-22399$2,499.95 -
HK MP5, MP5K Optic Mount - 9mm - Raised - Picatinny
MI Midwest Industries
$119.95Midwest Industries HK MP5, MP5K Tall Optic Mount - 1913 Picatinny Rail Tall, clamp-on optic mount for HK MP5 and MP5K pattern firearms, giving a higher, more upright sightline while still allowing use of the factory diopter sights. Ideal for mounting...HKP-22397$119.95