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
HK MP5 Pistol Stabilizing Brace - .22LR - Skeletonized
SB Tactical
Now: $119.96Was: $149.95SB Tactical - HK MP5 .22LR Pistol Stabilizing Brace - Skeletonized Features: Complete assembly, ready-to-install Molded polymer end cap with QD socketHKP-21399Now: $119.96Was: $149.95 -
HK91, G3 Wood Buttstock - Surplus
H&K Heckler & Koch
$119.95HK German G3, 91, & PTR Wood Stock Complete - USED These stock sets were in use with the German military and are used in varying degrees of condition, ranging from good to very good shape overall...HKP-02554$119.95 -
HK Standard Buttstock Buttpad - OD Green - Surplus
H&K Heckler & Koch
$2.95H&K Standard Stock Buttpad - OD Green - Surplus HK German manufactured surplus A2 style stock buttpad in dark OD green. Used in fair condition. Compatible With:HKP-17364$2.95 -
On Sale
HK VP9 Gen 1 V2 Rail Mount Compensator
HKP HK Parts
Now: $74.96Was: $169.95HKP HK VP9 Gen 1 V2 Rail Mount Compensator *DO NOT USE COMPENSATOR WITH A THREAD PROTECTOR INSTALLED ON THE BARREL. Doing so will result inHKP-19370Now: $74.96Was: $169.95 -
HK VP9, P30, HK45 Optic Plate - Votex Viper, Venom, Burris Fastfire - Red Dot Pistol Mount
HKP HK Parts
$49.95HKP HK Parts Optic Mount for Red Dot Sights for your HK VP9, HK P30, and HK45 Optic mounting plate for HK pistols without optic cut slides. The mount wedges into the rear sight dovetail slight to...HKP-18507$49.95 -
HK UMP .45, .40 Dual Magazine Clamp
$49.95UMP .45/.40 Dual Magazine Clamp The UMP mag clamp fits all .45 and .40 UMP magazines. Holds two magazines together for ease of use and easy access to 2 magazines. Billet machined and hard coat...HKP-19539-M$49.95 -
Out Of Stock
HK Recoil Rod Guide Ring For Recoil Rod Assemblies
H&K Heckler & Koch
$7.99HK Recoil Rod Guide Ring For Recoil Rod Assemblies This item is a high-wear item & is great to have as a spare part. Compatible With: HK MP5HKP-00143$7.99 -
Out Of Stock
HKP .45 ACP Micro Comp - Threaded 16x1 LH
HKP HK Parts
$29.95HKP .45 ACP Micro Comp - Threaded 16x1 LH The HK Parts Micro Comp & Thread Protector combines a lightweight design with dual functionality as both a compensator and thread protector. It easily...HKP-20210$29.95 -
On Sale
HK416, Colt M4 Magazine - .22LR - 20 Round
Walther / Umarex
Now: $31.97Was: $39.95HK, Umarex, Walther, HK416 .22LR Magazine - 20 Round Magazine Each magazine is the factory OEM magazine for all of the models above. Brand new factory fresh. This magazine is the perfect balance of...HKP-01748Now: $31.97Was: $39.95 -
On Sale
HK90 Series Cocking Tube End Cap - Steel
HKP HK Parts
Now: $15.96Was: $19.95Cocking Tube End Cap - Steel - US Made Manufactured from solid billet steel and finished in black in a nitride finish. Compatible With: All 90 series HK firearms and clones that use a tripleHKP-17580Now: $15.96Was: $19.95 -
HK USP Magazine - Extended -10 Round - .45 ACP - Pinky Rest
H&K Heckler & Koch
$49.00H&K 10 Round HK USP .45 ACP Extended Magazine w/ Pinky Rest Perfect for the states that require 10-round magazines or for those that compete & require a 10-round-only magazine. Compatible With:HKP-00315$49.00 -
HK UMP Magazine Spring - .45 ACP - 25 Round
H&K Heckler & Koch
$9.95H&K UMP (.45 ACP) 25-Round Magazine Spring Perfect for spares and to have on hand as these are a consumable item that needs to be replaced from time to time. A must-have item if you own a USC/UMP...HKP-01548$9.95