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
HK VP9, P30, HK45 Elevated Night Sights
H&K Heckler & Koch
$74.95H&K VP9/P30/HK45 Elevated Night Sights Elevated night sight set for improved visibility under low light conditions. Compatible With: HK VP9/VP9SK/VP40/VP9L ***Does NOT fit VP Optic Ready models HK...HKP-22018$74.95 -
Out Of Stock
Suppressor Cleaner Evolution - 1000ml
SchleTek
$70.00SchleTek Suppressor Cleaner Evolution 1000ml Keep your suppressors clean and optimally functioning with SchleTek suppressor cleaner.HKP-21726$70.00 -
On Sale
HK45C Railok™ Threaded Barrel Compensator
HKP HK Parts
Now: $129.95Was: $189.95HK Parts Railok™ Mounting System Threaded Barrel Compensator: H&K HK45C The HK Parts Railok™ mounting system compensator strikes a seamless balance of form and function. Users will immediately notice the reduction in muzzle...HKP-21264Now: $129.95Was: $189.95 -
On Sale
HK UMP Enhanced Top Rail - Red
HKP HK Parts
Now: $39.95Was: $49.95HKP HK UMP Enhanced Top Rail - Red HK USC, UMP top receiver rail with hardware. The extended length allows the use of all optics that fit on a Picatinny rail. This unit has a contoured no snag design for ease of use and a beautiful fit. Includes: Each...HKP-20812Now: $39.95Was: $49.95 -
On Sale
HK UMP, USC Hammer Spring - Right - US
USA
Now: $7.95Was: $9.95HK UMP & USC Right Side Hammer Spring For Lowers - USAHKP-19557Now: $7.95Was: $9.95 -
On Sale
HK G36C Folding Stock
HKP HK Parts
Now: $95.95Was: $119.95HKP HK G36C Folding Stock HK G36C 9.5" rear stock assembly. One full inch shorter than the standard G36 and G36K stock. This is the preferred stock for average height shooters. Compatible With: G36, G36K, G36C, G36E SL8 to G36 builds In-spec clones and...HKP-19299-MNow: $95.95Was: $119.95 -
Out Of Stock
HK MP5 Magazine - 30 Round - .40 S&W, 10mm - Gray - Used
H&K Heckler & Koch
$159.95H&K Heckler & Koch 30 Round Magazine for HK MP5 .40/10mm - Gray - USED These magazines are no longer available, and we have just a few remaining units. Once they are gone, they are gone for good. These magazines are USED and are...HKP-01726$159.95 -
On Sale
Micro Comp - Threaded 14.5x1 LH - .40 S&W
HKP HK Parts
Now: $19.95Was: $49.95HKP .40 S&W Micro Comp - 14.5x1 LH This lightweight micro comp serves as both a compensator and thread protector. It attaches easily to any factory spec 14.5x1 LH .40 S&W barrel. Specifications: Threaded 14.5x1 LH Compatible...HKP-20596Now: $19.95Was: $49.95 -
On Sale
HK MP5 Dual Magazine Clamp Conversion Screw - G3 to MP5 Mags
HKP HK Parts
Now: $1.95Was: $2.95HKP Dual HK MP5 Magazine Clamp Conversion Screw This screw converts a HK91, G3, PTR dual magazine clamp (HKP-19634) into the correct length for use with an MP5 magazine. Includes: 1 screwHKP-20318Now: $1.95Was: $2.95 -
HK MP5K Slimline Handguard
H&K Heckler & Koch
$49.95H&K HK MP5K Slimline Forearm Used German military slimline forearm refinished in a black cerakote . Cut down to fit the MP5k. These are rare items only offered here at HK Parts. Each item is in good to excellent shape. Compatible With: MP5K,...HKP-20275$49.95 -
HK416 OTB E1 Buttstock and Buffer Tube Set
H&K Heckler & Koch
$469.95H&K MIL-SPEC 416 OTB Buffer Tube & HK E1 Stock Combo Genuine HK416 E1 Stock with the new style marine environment "over the beach" buffer tube. Buffer tube has ball bearing rollers to tighten the stock when locked in position, and helps smooth...HKP-20104$469.95 -
Out Of Stock
HK VP9, P30, HK45C Front Sight - HD XR Night Sight - Orange
Trijicon
$100.99Trijicon HD XR Front Sight - H&K .45C, P30, VP9 (Excluding VP9 Optics Ready) - Front Sight Only: Orange Outline / Green Tritium The Trijicon HD XR night sights were specifically designed with the ever evolving challenges of law enforcement agencies...HKP-20075$100.99