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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HK416, MR556 Magazine - 30 Round - Maritime
H&K Heckler & Koch
$94.95Heckler and Koch HK416, MR556 30 Round Maritime Magazine - Multiple Color Options Designed to provide optimum ammunition feeding for any M16/M4/AR15-type weapon, the Heckler & Koch 30-round Steel Magazine can be used in any...HKP-21169-M$94.95 -
On Sale
HK45C, USPC Magazine Extension - +4
HKP HK Parts
$39.95 - $43.95HKP HK Parts +4 Round .45 ACP Magazine Extension for the Compact HK45 and HK USP HK Parts magazine extension +4 adds 4 additional rounds to the HK45C, 8 round magazine. Each unit can then be fully assembled into a 12 round HK45C magazine. Ideal for...HKP-18654-M$39.95 - $43.95 -
Out Of Stock
HK MP5, MP5K, HK94 Magazine Release Set
HKP HK Parts / Heckler & Koch
$94.95HKP and Heckler and Koch Complete Magazine Release Set for your 9mm HK MP5, HK MP5K, and HK94 - German or American Complete magazine paddle mag release kit that includes everything you need for the standard and paddle mag release on your HK 9mm...HKP-17569$94.95 -
HK USP Magazine Floorplate - .45 ACP - 12 Round - Standard
H&K Heckler & Koch
$18.95H&K 12 Round HK USP .45 ACP Standard Magazine Floor Plate New factory fresh production. Perfect for concealed carry or for those that prefer a lower profile footprint. Compatible With: USP .45 Full Size - 12 round USP .45 Tactical - 12 round USP .45...HKP-01198$18.95 -
Out Of Stock
Thread Protector - .45 ACP - 16x1 LH - US
HKP HK Parts
$14.95HKP .45 ACP Thread Protector - Threaded 16x1 LH This .45 caliber thread protector fits all full-size and compact barrels with 16x1 LH threads. Made in the USA from stainless steel with a nitride finish, it's essential for protecting your threaded barrels...HKP-19669$14.95 -
HK MP5SD Locking Piece - 115 Degree - 9mm
RCM
$33.95RCM MP5SD 9mm Locking Piece - 115 Degree This locking piece is a US-made version of the factory German MP5SD 115-degree locking piece. Each locking piece is made 100% here in the USA from ordnance grade steel, heat treated, and made to last...HKP-02192$33.95 -
Out Of Stock
HK MP5, MP5K Optic Mount - Low Profile - Aimpoint T1, H1, T2
B&T Brugger & Thomet
$100.00B&T MP5, MP5K Low Mount For T1/H1 & T2 Aimpoint Ideal for use with the Aimpoint line of T-1/T2 & H-1/H2 type of optics. This mount is the lowest low profile mount available for use with the T1/T2 style of mounting system. This same mounting...HKP-16862$100.00 -
On Sale
Modular Linear Compensator Body - Mach 3
Kaw Valley Precision
Now: $35.95Was: $39.95Kaw Valley Precision Mach 3 Modular Linear Comp Body The KVP MACH 3 is a user configurable linear compensator system. 1-1/8"x28 TPI internal threads accommodate common suppressor attachments, such as a SilencerCo 3-lug mount, direct thread mounts,...HKP-19984Now: $35.95Was: $39.95 -
HK USP Match Trigger Conversion Kit
H&K Heckler & Koch
$189.95H&K HK USP/USP Tactical Match Trigger Conversion Kit The HK USP Match Trigger Kit is a true drop-in kit for USP full-size pistols. This will fit all of the HK German USP 9mm, 40 & .45 Cal pistols. The match trigger kit will adjust the trigger...HKP-01039$189.95 -
Out Of Stock
HKP 3-Lug Adapter Wrench
HKP HK Parts
$28.95HKP 3 Lug Adapter Wrench HK 3-Lug adapter tool that slides over the male end of the 3-lug adapters commonly used on threaded barrel applications for the addition of suppressors, flash hiders, compensators, silencers, etc. You can then tighten them down...HKP-18240$28.95 -
On Sale
HKP .45 ACP Vented Micro Comp - Threaded 16x1 LH
HKP HK Parts
Now: $23.95Was: $29.95HKP .45 ACP Vented Micro Comp - Threaded 16x1 LH The HK Parts micro comp & thread protector is designed to be lightweight, and functional as both a compensator and thread protector. The HK Parts micro comp easily attaches to the end of any...HKP-20211Now: $23.95Was: $29.95 -
On Sale
HK VP9L, VP9 Match Lever - International Holster - Comp Carry
Comp-Tac
Now: $44.21Was: $81.95Comp-Tac HK VP9L/VP9 Match International Comp Carry Holster - Lever At last a custom made Comp-Tac international OWB holster for your HK pistol that allows you to have the rail mount compensator, comp weight, or match weight installed. Manufactured by...HKP-20112-MNow: $44.21Was: $81.95