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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HK MP5, HK91, G3, HK33 Cocking Tube Detent End Cap
H&K Heckler & Koch
$4.95HK German Cocking Tube End Cap/Dust Cap Detent HK German cocking tube detent for all steel and aluminum cocking tube end caps. Made of steel and finished in black.HKP-18050$4.95 -
On Sale
Picatinny Optic Mount - 30mm Barrel Mount - Dual Rail
HKP HK Parts
Now: $4.95Was: $14.9530mm Barrel Mount, Dual Picatinny Rail Universal barrel mounted dual Picatinny for mounting accessories directly to barrels with a 30mm O.D. Features: Mounts directly to the barrel 4 screws supplied for a secure fit Double sided Picatinny...HKP-16674Now: $4.95Was: $14.95 -
HK USP .45 ACP MOD 1 Compensator
HKP HK Parts
$179.95HK Parts MOD 1 Compensator: H&K USP .45 ACP The HK Parts MOD 1 compensator perfectly blends form and function, setting a new standard in muzzle control. Experience a significant reduction in muzzle flip and recoil, allowing you to get back on target...HKP-22079$179.95 -
HK CC9 Holster - eV2 Max - RH
Comp-Tac
$69.95Comp-Tac HK CC9 eV2 Max Holster - Right Hand The Comp-Tac® eV2™ Max Holster offers enhanced comfort and versatility for everyday carry. Built with a two-ply leather backing, it provides a smooth feel against the skin while maintaining the...HKP-21923$69.95 -
Out Of Stock
B&T APC9/TP9/SPC9 Magazine Slim Bumper Upgrade Kit
B&T Brugger & Thomet
$20.00B&T Magazine Slim Bumper Upgrade Kit This magazine upgrade kit enhances the durability of your 9mm magazines, providing extra protection for the base. The kit features a two-piece base plate that reinforces the bottom of the magazine, covered with a...HKP-21712$20.00 -
HK MP5, SP5 Trigger Housing - AR - 9mm
Magpul
$299.95Magpul HK MP5/SP5 9mm AR Trigger Housing With our new MP5 AR style trigger housing you can have the desired Navy pictograph look with the versatile options of trigger guards to fit your shooting style and the option of storage inside the magpul grip...HKP-20727-M$299.95 -
HK45C, P30 Holster - EV2 AIWB - Hybrid Max
Comp-Tac
$67.95 - $69.95Comp-Tac HK P30/HK45C EV2 AIWB Holster Hybrid Max Appendix inside-the-waistband (AIWB) hybrid holster designed for HK P30 and HK45C pistols. The eV2 Max combines a Kydex shell for secure firearm retention with a two-ply leather backing that rests...HKP-19571-M$67.95 - $69.95 -
HK MP5 Pistol Stabilizing Brace- SBA3 - 5 Position Adjustable
SB Tactical
$269.95SBA3 - 5 Position Adjustable Stabilizing Brace - MP5 The perfect addition to your firearm with the ability to adjust length with its 5-position adjustable buffer tube. Dramatically enhances versatility, and features a minimalist design with an integral,...HKP-20276$269.95 -
HK G36, SL8, UMP, USC Hammer
GSG9
$124.95G36 & HK UMP Hammer For Lower Or Trigger Group- US Made These hammers are a direct fit on the USC and SL8 platform.HKP-19852$124.95 -
HK MP5, MP5K Rear Sight Base - MIM and Machined
H&K Heckler & Koch
$14.95MP5, MP5K Rear Sight Base - Weldment New HK MP5, MP5K 17-4 Stainless H900 rear sight base. The most correct MP5, MP5K rear sight base available. The only factory correct sight base with the factory HK German side axis grooves. If you want your build to...HKP-19705$14.95 -
On Sale
HK MP5 - Momentary - 628 - USED
Surefire
Now: $399.95Was: $499.95Surefire 628 HK MP5 - Momentary - USED VARYING CONDITION SHOWN - SOLD INDIVIDUALLY NO BATTERIES INCLUDED. USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Surefire 628 momentary forearm used in...HKP-19403-BNow: $399.95Was: $499.95 -
HK45 Compact, HK45C Tactical Compensator - Quick Detach
HKP HK Parts
$149.95HK45C, HK45C Tactical - Comp Weight™ Quick Detach Compensator Compatible With: HK45C Tactical HK45C Specifications: Length - 4 1/4 inches Height - 1 7/8 inches Width - 1 3/8 inches Weight - 3.3 oz Torque: 3nM / 26 inch-lbs Attaches to the frame...HKP-18293$149.95