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, MR566, HK417 MR762 Buffer Retainer
HK HAUS
$9.95HK Haus Buffer Retainer for HK416, HK417 New HK USA manufacture for the HK416 and HK417 family of firearms. Made from stainless steel.HKP-20040$9.95 -
On Sale
HK VP9SK, P30SK Magazine Extension Kit - +5
HKP HK Parts
Now: $25.47Was: $39.95HKP +5 HK VP9SK/P30SK Magazine Extension Kit Adds 5 additional rounds to the HK VP9SK/P30SK 10 Round magazine with the simple swap of the floor plate & high reliability mag spring. This is an easy 2...HKP-18494Now: $25.47Was: $39.95 -
Out Of Stock
HK USP, USPT Magazine - .45 ACP - 12 Round - Standard Floorplate
H&K Heckler & Koch
$59.0012 Round HK USP .45 ACP Standard Floorplate Magazine New HK German USP 45 12-round magazine with standard floor plate (no extended finger rest) as this mag sits flush. Compatible With:HKP-02374$59.00 -
HK UMP Magazine Block - .45 ACP - 25 to 10 Round Conversion
HKP HK Parts
$9.95HKP HK UMP .45 ACP Magazine Block UMP mag block plug to limit the magazine capacity to 10 rounds for states with capacity restrictions. This is designed to use on the HK UMP .45 25 round magazine...HKP-18171$9.95 -
On Sale
HK Single Point Sling - Dark Earth
HKP HK Parts
Now: $11.96Was: $29.95HKP Single Point Sling - Dark Earth This sling is a must-have for those who prefer operating with a single-point sling over the traditional 3-point HK sling. Features:HKP-09051Now: $11.96Was: $29.95 -
HK MP5, MP5K HK93, HK91, G3 Claw Mount with STANAG Adapter for Scope
H&K Heckler & Koch
$399.95HK Claw Mount With Stanag Adapter For Scope - Used (Good Condition) These parts just came in and were pulled from factory German Demilled HK G3s used in good shape. This product is no longer made or...HKP-02387$399.95 -
HK MP5, HK94, SP89, SP5K Cocking Handle
H&K Heckler & Koch
$59.95HK MP5, 94 & MP5K, SP89, SP5K Cocking Handle - German New factory HK German latest manufactured and updated style. This part is the current model that HK is equipping all new HK MP5/MP5K variants...HKP-00095$59.95 -
HK91, G3, PTR Magazine - 20 Round - Steel - Like New
Rheinmetall
$28.95Rheinmetall HK G3, HK91, and PTR91 20 Round Steel Magazine - Like New Steel magazine for HK91, G3, and PTR91 pattern rifles with a 20-round capacity. Originally made for the German army and offered...HKP-22563$28.95 -
Out Of Stock
HK VP9L Barrel - 9mm - 5.6" - Threaded 1/2x28 RH
RCM
$262.50RCM HK VP9L 9mm Tactical Barrel - Threaded 1/2x28 RH Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest...HKP-19203$262.50 -
On Sale
HK P30SK Compensator - Rail Mount
HKP HK Parts
Now: $101.21Was: $169.95HKP HK P30SK Rail Mount Compensator - Black This HK P30SK rail mount compensator is the perfect accessory brought to you by HK Parts. This compensator has a sleek design that flows with the lines of...HKP-20171Now: $101.21Was: $169.95 -
Muzzle Brake Compensator - Threaded 15x1 RH - 5.56 / .223, 7.62 / .308
HKP HK Parts
$29.95HKP HK Parts 5.56 / .223 and 7.62 / .308 Muzzle Brake Compensator, Threaded 15x1 RH This compensator is perfect for any 15x1 RH Barrel. SpecificatHKP-19738$29.95 -
HK21E, HK23E Locking Piece #9 - 40 Degree
RCM
$49.95Locking Piece #9 - 40 Degree - US Made Compatible With: HK 21e HK 23eHKP-02521$49.95