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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On Sale
HK VP9 Modular M.R.A Red Dot Adapter
Outer Impact
Now: $49.95Was: $55.95Red Dot Mount Adapter for H&K VP9 Pistol OuterImpact is excited to introduce the H&K VP9 pistol red dot adapter Mount-M.R.A. This product will allow the shooter to utilize a variety of red dot sights on their H&K with one...HKP-20059Now: $49.95Was: $55.95 -
On Sale
HK416, MR556, G36, SL8 Gas Piston
USA
Now: $63.95Was: $79.95HK G36, HK SL8, HK 416, & HK MR556 Gas Piston Complete assembly with 3X rings installed and nitrided black. Counts as one US-made compliant part for your SL8-G36 style conversion. This is one of the best parts to use on the conversion as it is one of...HKP-14540Now: $63.95Was: $79.95 -
On Sale
Bore Boss Pull-Through Bore Cleaner - 5.56 / .223
Real Avid
Now: $8.95Was: $10.95Real Avid Bore Boss Pull-Through Bore Cleaner - 5.56mm/.223 From the barrel of innovation comes the ultra-compact Bore Boss, the first-ever self-storing, easy-feeding, clean-pulling, field-ready, hassle-free, pure-genius bore cleaner. The single-piece...HKP-19402Now: $8.95Was: $10.95 -
Out Of Stock
HK417, MR762 Handguard - Extended Picatinny
H&K Heckler & Koch
$656.95HK MR762, HK 417 Extended Picatinny Handguard Complete HK German manufacture. Each unit comes with both of the mounting screws. HK's extended 13" rail allows for longer sight radius and more rail space for your MR762 or HK417. The MR762 comes from the...HKP-16656$656.95 -
Out Of Stock
HK Mark 23 Barrel - .45 ACP - 5.38" - Non-Threaded
RCM
$250.00RCM HK Mark 23 .45 ACP Flush Fit Barrel - Non-Threaded This custom-made barrel is expertly crafted from ordnance-grade steel, heat-treated, and finished with a highly desirable nitride coating. Designed specifically for the HK Mark 23 .45 pistol, it...HKP-17622$250.00 -
On Sale
HK G3K Cocking Tube
PTR
Now: $103.95Was: $129.95G3 Cocking Tube For PTR 91K Or G3K Projects - New Perfect for that custom HK build. These are made by PTR to the correct specifications. We do not use cut-down or Pakistani materials, we only use the best US and German hardware. Compatible With: HK G3K...HKP-01462Now: $103.95Was: $129.95 -
On Sale
HK93, HK33 Handguard - M-LOK
HKP HK Parts
$95.95 - $111.95HK93, HK33 & PTR Low Profile Forearm M-LOK The M-LOK tactical handguard delivers modern M-LOK functionality to classic HK platforms. Features: Made in USA (922r compliant) M-LOK compatible Machined from billet aircraft grade aluminum Type...HKP-17263-M$95.95 - $111.95 -
HK33, HK53, HK93 Backplate - Parkerized
H&K Heckler & Koch
$64.95Steel Back Plate For HK93, 33, 53 & MP5, 94- Parkerized Finish HK German backplate with the recoil assembly cup guide installed. Each unit comes complete & freshly parkerized. Derived from a German HK91 backplate and using factory tooling,...HKP-16252$64.95 -
On Sale
HK MP5, MKE AP5 Trigger Housing - 9mm - Contoured - 0,1 - BLEMISHED
MKE
Now: $34.95Was: $49.95HK MP5, MKE AP5 Trigger Housing - 9mm - Contoured - 0,1 - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This contoured trigger housing is...HKP-99395Now: $34.95Was: $49.95 -
On Sale
HK CC9 Complete Magazine - Extended Pinky Rest - 9mm - 10 Round
HKP HK Parts
Now: $65.95Was: $82.95HKP CC9 10 Round 9mm Complete Magazine w/ Extended Pinky Rest This magazine starts with a factory German 10-round CC9 mag, expertly enhanced by the HK Parts extended pinky rest floor plate featuring a built-in pinky rest. The result is a fully assembled,...HKP-22277-MNow: $65.95Was: $82.95 -
On Sale
HK USPC, HK45C Magazine - 15 Round
HKP HK Parts
$95.95 - $107.95HKP HK Parts 15 Round .45 ACP Magazine for HK 45C and USPC HK Parts +7 magazine extension boosts the HK45C 8-round mag to a full 15 rounds. Fully assembled and factory fresh, it's perfect for competition, concealed carry, or range use. Compatible...HKP-22207-M$95.95 - $107.95 -
HK VP9 Elevated Night Sight
H&K Heckler & Koch
$94.95H&K VP9OR Elevated Night Sight Tritium front sight with high visibility ring and tritium rear sight. Fits all VP Optic Ready models. Lower 1/3 Co-Witness with Trijicon RMR. Compatible With: HK VP9 Optic Ready HK VP9SK Optic...HKP-22019$94.95