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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
HK USP Series Firing Pin Block Spring - Old Style
H&K Heckler & Koch
$9.95HK USP Series Old Style Firing Pin Block Spring In order to use the new firing pin block spring, you also have to upgrade the firing pin, firing pin block, as well as the firing pin block spring. HK...HKP-02149$9.95 -
On Sale
HK MP5 Optic Mount - Raised Aimpoint Acro
HKP HK Parts
$86.03 - $134.95HKP HK MP5 Raised Aimpoint Acro Optic Mount HK Parts brings you one of the most requested optic mounts for the MP5 platform. An elevated design with a direct Aimpoint ACRO mounting interface. Our...HKP-21666-M$86.03 - $134.95 -
HK45, HK45 Compact Trigger Rebound Spring
H&K Heckler & Koch
$8.95HK45 Trigger Rebound Spring This part is also known as the trigger return spring. Compatible With: HK45 HK TacticalHKP-01812$8.95 -
Out Of Stock
HK SP5K 9mm Drop In Paddle Mag Release Upgrade Kit
H&K Heckler & Koch
$129.95HKP HK Parts and Heckler and Koch Anti-Rattle Roller Tipped Paddle Magazine Release Kit No modifications, no refinishing...complete drop-in kit included New HK German and USA made paddle mag...HKP-18082$129.95 -
HK MP5 Stock or Brace Adapter - .22LR - Picatinny Rail
HKP HK Parts
$134.95HKP MP5 .22LR Picatinny Rail Brace/Stock Adapter Our rail stock adapter enables seamless attachment of any 1913 Style Stock or brace to your MP5.22. The 1913 style stocks & braces firmly lock in...HKP-21526$134.95 -
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Bundle of 10
Zenith
$349.9530 Round Magazine - Zenith - MP5, MP5K - Bundle of 10 Features: Durable electro-plated black finish for exceptional corrosion resistance All steel constructionHKP-20673$349.95 -
HK USP Barrel - 9mm - 4.86" - Threaded 13.5x1 LH - Standard
H&K Heckler & Koch
$320.95H&K USP 9mm Standard Threaded Barrel - Threaded 13.5x1 LH This Heckler & Koch factory threaded barrel is a drop-in replacement for USP 9mm SD models. It can also be used on standard USP 9mm full-size...HKP-17809$320.95 -
HK USP Left Side V3 Decocking Lever
H&K Heckler & Koch
$47.95H&K HK USP Left Side V3 Decocking Lever V3 decock only lever for right-handed operation. German HK V3 lever for full-size USP's. When used along with the V3 - V4 detent plate, it will convert to...HKP-01168$47.95 -
Out Of Stock
HK USPC Tactical Barrel - 9mm - 4.28" - Threaded 1/2x28 RH
RCM
$225.00RCM HK USPC 9mm Tactical Barrel - Threaded 1/2x28 RHHKP-01705$225.00 -
HK416, MR556, HK417, MR762 Front Folding Sight - 33mm
H&K Heckler & Koch
$179.99Heckler and Koch's 33mm Front Folding Sight for HK416, MR556, HK417, MR762 HK416 Or HK MR556 Front Folding Sight. This item attaches directly to the front gas block of the HK 416, HK MR556 or HK...HKP-02548$179.99 -
HK MP5SF Elbow Spring Bushing Sleeve
H&K Heckler & Koch
$5.95Heckler and Koch replacement distance sleeve for MP5SF elbow spring with roller Features: Precision-machined elbow spring and roller used inHKP-03330$5.95 -
HK MP5 Stock or Brace Adapter - Picatinny Rail
HKP HK Parts
$119.95HKP HK MP5 Picatinny Rail Brace/Stock Adapter Our rail stock adapter allows you to attach any 1913 Style Stock or brace to your MP5. The 1913 style stocks & braces lock in place and provide a better...HKP-21426$119.95