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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Out Of Stock
HK416, MR556, AR-15 PDWC Stock - Extended Buttpad
HKP HK Parts
$0.00HK 416C Style With Extended Buttpad - PDW Stock For AR15, MR556, HK416 & M4 Models The first PDW style stock that does NOT require a proprietary bolt carrier or special components. A true drop-in...HKP-17800$0.00 -
On Sale
HK416, MR556 ARC-Fire Trigger - V2 - Non-Ambi Kit - 0° - 90° - 180°
AS Designs
Now: $179.96Was: $199.95AS Designs V2 ARC-Fire Non-Ambidextrous Trigger Kit for HK416 and MR556 with 0°-90°-180° Selector Configuration The AS Designs ARC-Fire V2 is a patent-pending Active Reset Clutch (ARC) trigger system...HKP-22808Now: $179.96Was: $199.95 -
On Sale
HK MP5, SP5, MP5K, SP5K, AP5 Cocking Tube End Cap
MKE
Now: $9.56Was: $11.95MKE Cocking Tube End Cap for HK MP5, SP5, MP5K, SP5K, AP5 MKE steel cocking tube end cap for HK MP5, MP5K, and 90 series firearms. Made in Turkey, this factory-style part is perfect for replacement,...HKP-22867Now: $9.56Was: $11.95 -
HK MP5 A3 Retractable Stock - Like New
H&K Heckler & Koch
$799.95Heckler and Koch MP5 A3 Retractable Stock Retractable A3 stock designed for the Heckler and Koch MP5 platform. In like-new condition. Compatible With: MP5, SP5 HK94 In-spec clones and custom buildsHKP-22784$799.95 -
Out Of Stock
HK CC9 Threaded Barrel - 13.5x1 LH
RCM
$223.95RCM HK CC9 Barrel - Threaded13.5x1 LH Enhance the performance and precision of your firearm with the RCM HK CC9 Threaded Barrel - 13.5x1 LH, a top-tier upgrade designed for reliability and accuracy...HKP-22655$223.95 -
On Sale
HK MP5, AP5 Front Sight Tower - CRACKED - GUNSMITH SPECIAL
MKE
Now: $7.46Was: $49.95MKE AP5, MP5 Front Sight Tower - CRACKED - GUNSMITH SPECIAL SOLD INDIVIDUALLY - CRACKED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEHKP-22220-BL-BNow: $7.46Was: $49.95 -
HK MR762 A4 Upper Receiver Kit - 13"
H&K Heckler & Koch
$2,499.95HK MR762 A4 Upper Receiver Kit - 13" Barrel The MR762 A4 kit contains a complete upper receiver and barrel assembly. The closed system design significantly reduces malfunctions typically associated...HKP-22399$2,499.95 -
HK MP5 Metal Trigger Housing Conversion Kit - AC Unity Grip
HKP HK Parts
$189.95HK MP5 Metal Trigger Housing Conversion Kit - AC Unity Grip This kit includes everything you need to convert a polymer MP5 trigger group a robust metal housing. Simply use your existing semi-auto SEF...HKP-22321$189.95 -
On Sale
Century Arms AP5-P, AP5-M Handguard with Handstop
MKE
Now: $31.46Was: $34.95MKE AP5-P/M Handguard with Hand Stop MKE handguard for the MKE manufactured Century AP5-P and AP5-M. Please note: Will fit other MP5K style receivers with some slight fitting.HKP-22221Now: $31.46Was: $34.95 -
Out Of Stock
HK MP5K Recoil Rod Assembly - 9mm
RCM
$54.95RCM HK MP5K Recoil Rod Assembly The recoil rod and spring assembly is a great item to have on hand for replacement and spares as this is a consumable part. Compatible With: HK MP5KHKP-22203$54.95 -
On Sale
HK CC9 Extended Base Plate
HKP HK Parts
Now: $28.66Was: $44.95HKP CC9 Extended Base Plate This +0 base plate gives your CC9 magazine the extended look and enhanced grip of a full-capacity mag without adding any rounds. Perfect for restrictive states or anyone...HKP-22167-MNow: $28.66Was: $44.95 -
HK CC9 Disassembly Lever - Takedown 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