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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HK USP45 Magazine with Extension, Complete - 24 Round
HKP HK Parts
$89.95HKP HK Parts 24 Round Magazine Complete for HK USP45, USP45 Tactical The HK Parts manufactured USP 45 mag extension has been installed on an HK USP 45 12 round magazine to increase the capacity to a 24 round complete magazine. A great accessory and...HKP-19479$89.95 -
HK MP5, HK94, SP5 Magazine Spring - 10 Round
H&K Heckler & Koch
$6.9510 Round Magazine Spring - HK MP5, 94, SP5 A must-have repair and replacement part great for spares. Compatible With: All factory spec steel 10 round MP5, 94 style curved magazinesHKP-19454$6.95 -
HK VP9, VP40 Backstrap - Large - Black
H&K Heckler & Koch
$24.95H&K HK VP9, HK VP40 Backstrap - Large - Black New HK German manufacture. Large Backstrap VP full size series. Compatible With: HK VP9, VP9L, VP9 Match HK VP9A1 F HK VP9A1 K HK VP40HKP-16815$24.95 -
HK USP Pistols Trigger Bar
H&K Heckler & Koch
$44.95HK USP Pistols Trigger Bar Compatible With: USP 9mm USP .40 USP .45 ALL full size tactical pistols. USP Elite, Expert, etc. Please Pote: Not for use on the USPC models.HKP-01933$44.95 -
HK USP, USP Compact Lock Out Key
H&K Heckler & Koch
$9.95HK USP & USPC Lock Out Key A great spare that fits all USP & USPC models and variants.HKP-01409$9.95 -
Picatinny Battle Sight - HK Front Folding
Troy Industries
$119.95Troy Industries Tritium Front Folding BattleSight – HK Durability and dead-on accuracy have made the Troy Industries HK Front Folding Battle Sight one of the best choices for Special Ops and tactical users worldwide. Please Note: It will not work...HKP-00031$119.95 -
Out Of Stock
HK416 Upper Receiver Kit - 10.4" - 5.56
HKP HK Parts
$2,485.95HKP 416 10.4" 5.56 Complete Upper Kit Complete Each kit includes the complete upper assembly, bolt group, tungsten buffer, & high-reliability SS recoil spring. This upper kit is a complete gas piston HK 416 style upper assembly that will drop on your...HKP-17662$2,485.95 -
HK416, MR556 Charging Handle Roll Pin
H&K Heckler & Koch
$7.95HK Heckler and Koch Clamping Sleeve or Roll Pin for Pawl on Charging Handles This is the longer one that is used on the outside of the charging handle. There are one of these pins used per charging handle.HKP-17063$7.95 -
HK SL8 Buttstock Cheek Riser Piece
H&K Heckler & Koch
$34.95Heckler and Koch HK German SL8 Stock Cheek Riser Piece Compatible with all HK SL8 models. Cheek piece for SL8-1 and SL8-6 riflesHKP-01701$34.95 -
$10.95 -
HK91, G3 Magazine Catch - Used
H&K Heckler & Koch
$16.95Heckler and Koch Magazine Catch, USED for HK91, HK G3, and PTR91 The highest quality magazine catch available. High quality HK German production units are slightly used HK Parts from Heckler and Koch Germany. These also have the proper cut in them and do...HKP-18693$16.95 -
Out Of Stock
HK G3K Cocking Tube
PTR
$89.95G3 Cocking Tube For PTR 91K Or G3K Projects - New Perfect for that custom HK build. These are made by PTR to the correct specifications. We do not use cut-down or Pakistani materials, we only use the best US and German hardware. Compatible With: HK G3K...HKP-01462$89.95