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 MP5 Stock or Brace Adapter - AR
HKP HK Parts
$114.95HKP MP5 AR Brace/Stock Adapter Each AR stock, brace adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct H buffers to protect your expensive firearm. This is the finest AR stock...HKP-17118$114.95 -
HK Screwdriver for Adjustable Rear Sight
H&K Heckler & Koch
$10.95Screwdriver for Adjustable Rear Sight Precision screwdriver designed for adjusting rear sights. Ideal for fine-tuning windage and elevation.HKP-21981$10.95 -
On Sale
HK MP5, SP5 Binary Trigger Group – SEF Navy - BFSIII - 9mm
FA Franklin Armory
Now: $674.95Was: $899.95Franklin Armory - BFSIII HK-C1 – Binary Trigger Group – SEF Navy Housing SEF Navy style- HK binary trigger group Binary triggers count as 4 922r compliant components. The components that count towards 922r compliance include the trigger...HKP-19506-MNow: $674.95Was: $899.95 -
On Sale
HK VP9 Optic Plate #5 - Burris FastFire, Vortex Viper / Venom - Red Dot Pistol Mount - Steel
HKP HK Parts
Now: $29.95Was: $49.95HK VP9 #5 Optics Plate for Burris FastFire Steel VP9 optic plate to mount the Burris FastFire. Made in the USA. Compatible With: Burris FastFire 2 & 3, Vortex Viper and Venom, & ADE Advanced RD3-015 HK VP9 OR, VP9 Tactical OR HK VP9L...HKP-19544Now: $29.95Was: $49.95 -
On Sale
HK G36, G36K, G36C Bolt Carrier - Full Auto - Tungsten Filled
GSG9
Now: $439.95Was: $549.95HK G36 Tungsten Filled - Bolt Carrier Complete - Full Auto Compatible With: G36 G36K G36C Will NOT work with a factory HK SL8HKP-19030Now: $439.95Was: $549.95 -
On Sale
X5L Gen 3 Universal Laser and Light - Green
Viridian
Now: $367.95Was: $409.00Viridian X5L Gen 3 Universal Laser & Light - Green The new Viridian X5L Gen 3 is the latest version of the original green laser sight + tactical light combo. First launched in 2008 this family of products has continued to innovate through the years...HKP-19562Now: $367.95Was: $409.00 -
HK VP9, P30 Magazine - 20 Round - Red Follower - 9mm
HKP HK Parts / Heckler & Koch
$79.95HKP HK Parts and Heckler and Koch 20 Round 9mm Complete Magazine for HK VP9 and HK P30 HK Parts +5 Gen 2 magazine extension coupled with a 15 round factory German magazine body & red follower that adds 5 additional rounds total for a full assembled...HKP-18548$79.95 -
On Sale
HK MR556, MR762, CR556 H-Key 8 Rail Segment
HKP HK Parts
Now: $23.95Was: $29.95HK MR556, CR556 & MR762 HKey Rail Segment - 8 Slot 8 slot picatinny rail segment for the new "HKey" style forearms. This rail section is designed to fit and attach to any of the new HKey style forearms now being shipped on the MR556, CR556, MR762 and...HKP-17844Now: $23.95Was: $29.95 -
On Sale
PTR Flash Hider - G28 Style - Threaded 5/8x24 RH
MFI
Now: $67.95Was: $79.95MFI PTR Flash Hider - .223/5.56 - G28 Style - 5/8x24 RH The G28 2nd Gen flash hider is designed for 2016 and later PTR production models, as well as other firearms with 5/8x24 threaded barrels. This flash hider features a deep counter bore,...HKP-17940Now: $67.95Was: $79.95 -
HK MP5 Magazine Spring - .40 S&W, 10mm - 30 Round
H&K Heckler & Koch
$9.95H&K Heckler and Koch 30 Round Magazine Spring for HK MP5 40,10 New HK German MP5 40/10 magazine spring for the 30 round magazine. Hard to find and a must have repair and replacement item.HKP-01056$9.95 -
HK MP5, SP5K Magazine Unloader - 9mm
H&K Heckler & Koch
$109.95H&K Heckler and Koch MP5/SP5 9mm Magazine Unloader HK MP5 German Magazine Unloader for MP5, SP5, and HK94 9mm magazines. This part is compatible with the 30, 15, and 10-round factory magazines.HKP-00085$109.95 -
On Sale
HK UMP, B&T APC Pistol Stabilizing Brace
SB Tactical
Now: $50.95Was: $59.95SB Tactical HK UMP Pistol Stabilizing Brace The second generation of the SBT and enhances your B&T APC, HK UMP, or LWRCi SMG45 with an integral, right side-folding mechanism and an arm cuff based on the SB-Mini. The SBT-G2 provides you with all...HKP-20084Now: $50.95Was: $59.95