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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On Sale
AR-15 Super Safety - Forced Reset Selector - Ambidextrous Levers
Atrius
Now: $199.96Was: $249.95Atrius Ambidextrous Lever Forced Reset Selector for AR-15 Style Firearms The Atrius Forced Reset Selector gives AR-15 users three selector positions: SAFE, SEMI, and FULL SEMI. It is designed for...HKP-22349Now: $199.96Was: $249.95 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Cerakote
MKE
$58.46 - $64.95HK MP5 30 Round Magazine - MKE - AP5 - Cerakote Colors These MKE 30 round magazines are the perfect addition or replacement for your AP5 or MP5. Constructed of heat-treated steel for lasting strength...HKP-21341-M$58.46 - $64.95 -
On Sale
HK SL8, G36 Full Size Bottom and Side Rail Set, Complete - Aftermarket
USA
Now: $55.97Was: $69.95US made Full Size Aftermarket Complete Bottom and Side Rail Set for HK SL8 and HK G36 Comes with the bottom and 2 side rails, left and right, as well as the screws and Allen wrench. Made of...HKP-00633Now: $55.97Was: $69.95 -
HK416, MR556 Gas Block - Slimline - Vented
H&K Heckler & Koch
$145.95Heckler and Koch Low Profile Complete Gas Block for HK MR556, HK416, HK GermanHKP-02660$145.95 -
Out Of Stock
HK UMP Barrel - .45 ACP - 7.87" - Threaded .578x28
HDPS
$349.95HK UMP .45 ACP Barrel - Threaded .578x28 HDPS UMP barrels are perfect for the USC to UMP conversions and for a replacement UMP .45 ACP barrel. They are considered by many to be the finest US-made...HKP-20872$349.95 -
HK45, HK45 Compact, USP, USP Compact New Style Hammer
H&K Heckler & Koch
$62.95H&K HK USP/USPC/45/45C New Style Hammer Will work for USP/USPC variants 1-4, 9 & 10. This part replaces the older HK hammer without the sear cutout (part #214825). Compatible With:HKP-01256$62.95 -
HK -6 Roller For Bolt Head 7.94mm - Under-sized
H&K Heckler & Koch
$27.95H&K -6 Roller For Bolt Head 7.94mm - Under-sized New HK German -6 roller that measures 7.94mm. For use with all HK 90 series firearms. Please Note: The price listed is pHKP-00342$27.95 -
B&T Ambidextrous Sling Pin - Small
B&T Brugger & Thomet
$58.95B&T Ambidextrous Sling Pin - Small Replaces the small push pin to allow a sling attachment point on either the left or right side of the firearm. Each measures: 6x29mm with rubber o-ring and net...HKP-16886$58.95 -
Out Of Stock
HK P30SK Pistol Bench Mat
HKP HK Parts
$13.95HK P30SK Bench MatPerfect for the HK P30SK 9mm & .40 Cal Models This isn't your ordinary gun cleaning mat! Show your pride for your firearm while using this high quality neoprene rubber backed and...HKP-18090$13.95 -
On Sale
HK91, G3, PTR Magazine - 20 Round - Alloy - Like New
Rheinmetall
Now: $15.96Was: $19.95Rheinmetall HK G3, HK91, and PTR91 20 Round Magazine - Like New Rheinmetall G3 alloy mags were made for the German Army and are no longer in production. Once they are gone, they are gone for good...HKP-22495Now: $15.96Was: $19.95 -
On Sale
UZI Magazine - 25 Round - New Old Stock
IMI
Now: $32.46Was: $48.95Uzi 25 Round 9mm Magazine - IMI Licensed - Mec-Gar Manufacture Made in Italy by the renowned Mec-Gar magazine manufacturing company with IMI Licensing. An all-steel production and a blued finish to...HKP-21232Now: $32.46Was: $48.95 -
HK45, HK45T, P30L International Holster
Comp-Tac
$74.95 - $84.95Comp-Tac HK 45/Tactical/P30L International Holster The International is an outside the waistband holster with a modular mounting design giving the user 16 holster options in 1. Designed to be worn at...HKP-17482-M$74.95 - $84.95