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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HK33, HK53, HK93 Trigger Group - 2 Position Housing 0,1 - Safe, Semi Only
HKP HK Parts
$549.95HKP 93, 33, 53 Trigger Group 2 Position Housing 0,1 - Safe, Semi Only Our trigger group offering is the most desirable HK 93,33,53 trigger group available. Now you can upgrade your HK firearm to have...HKP-17246$549.95 -
HK MP5 Bolt Hold Open Axle Roll Pin - .40 S&W, 10mm
H&K Heckler & Koch
$8.95H&K MP5 40/10 Bolt Hold Open Axle Roll PinHKP-01634$8.95 -
Adjustable Folding Stock 1/2 inch Spacer
Choate
$7.95Choate Adjustable Folding Stock 1/2 inch Spacer This spacer adds 1/2 inch to our HK Choate folding stocks that uses the adjustable length of pull spacer system. You can add up to 5 of these spacers...HKP-19032$7.95 -
HK MP5, HK90 Series Night Sight System - Front and Rear
XS Sights
$153.99XS Front & Rear Night Sight System - HK Compatible With: HK MP5, 94 HK MP5K, SP89 HK 90 serHKP-00883$153.99 -
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 -
HK91, G3 Magazine - 20-Round - Aluminum - Refinished
H&K Heckler & Koch
$28.95Heckler and Koch Refinished 20-Round Aluminum Magazine for HK91, G3 Factory HK 20-round aluminum magazine for the HK91, G3, PTR, and other HK .308 pattern firearms. Each magazine starts as a...HKP-22877-M$28.95 -
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 -
HK USP, HK45 Compact Magazine, Complete - 18 Round
HKP HK Parts / Heckler & Koch
$89.95Heckler and Koch, HKP 18 Round Magazine for HK45 Compact, HK USP45 Compact Complete 18-round magazine assembled using a factory Heckler and Koch magazine body combined with an HKP magazine extension...HKP-22520$89.95 -
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...HKP-22399$2,499.95 -
Century Arms AP5-P, AP5-M Handguard with Handstop
MKE
$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-22221$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