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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HK21 FMP Parts Kit, 7.62x51
FMP HK CONTRACT
$2,189.95H&K HK21 FMP Parts Kit, 7.62x51 Seize your opportunity to secure a piece of history! These HK21 parts kits were manufactured by the Portuguese government under license from HK using HK's tooling, dies, and prints. Each HK21 kit has been...HKP-21393$2,189.95 -
Out Of Stock
HK VP9, VP9SK, VP40 Safety Clamp
H&K Heckler & Koch
$5.95H&K HK VP9/VP9SK, VP40 Safety Clamp - Black Genuine H&K safety clamp. Compatible With: HK VP9 HK VP9SK HK VP40 HK VP9A1 F HK VP9A1 KHKP-16795$5.95 -
Out Of Stock
HK417, MR762, G28 Adjustable Buttstock Set
H&K Heckler & Koch
$599.95HK G28 Fully Adjustable Stock For The MR762 & HK 417, G28 The hard to find elusive HK G28 adjustable stock kit complete with the upgraded parts needed to convert a stock MR762 or HK417 to allow this stock system to be used. HK German manufacture and...HKP-16761$599.95 -
On Sale
HK MP5, MP5K Flash Hider - A2 Style - 3-Lug - 9mm
HKP HK Parts
Now: $79.95Was: $99.95MP5, MP5K Flash Hider - A2 Style - 3-Lug - 9mm Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This flash hider does not require the of threads as it attached to the 3 lug tip. Also a great addition for any of 3 lug barrels...HKP-19520Now: $79.95Was: $99.95 -
On Sale
HK MP5SD Barrel - 9mm - 5.75" - Threaded 18x1 RH
B&T Brugger & Thomet
Now: $381.95Was: $449.95B&T HK MP5SD 9mm Barrel - Threaded 18x1 RH New from B&T Switzerland, this cold hammer forged (CHF), ported, and nitrided barrel is designed to meet factory HK specifications exclusively for MP5SD models. With a long-standing relationship with...HKP-17957Now: $381.95Was: $449.95 -
On Sale
HK MP5, MP5K Micro Comp - 9mm - Knurled - Threaded 1/2x28 - Right Hand
HKP HK Parts
Now: $20.95Was: $26.95HKP HK MP5/K 9mm Knurled Micro Comp - Threaded 1/2x28 RH Our new MP5 Micro Comp combines the classic appearance of a factory-style thread protector with enhanced functionality. Extended and slotted, this micro compensator not only preserves the factory...HKP-21176Now: $20.95Was: $26.95 -
On Sale
HK MP5 Folding Stock with HK Parts Adapter
B&T Brugger & Thomet
Now: $221.95Was: $277.95B&T Folding Stock for All MP5 Full Size Variants Swiss made B&T folding stock completely assembled With our own HK Parts stock adapter. CNC machined aircraft grade aluminum with QD sling attachment point. Compatible With: MP5 (NOT...HKP-20216Now: $221.95Was: $277.95 -
HK45, HK45 Compact, USP Trigger Bar Detent Spring
H&K Heckler & Koch
$5.95H&K HK USP/45/45C Trigger Bar Detent Spring This is a common replacement part as it can become worn or lost. Compatible With The Newer Style HK45 & HK45C Models: HK45, HK45 Tactical HK45C, HK45C Tactical Compatible With The HK USP...HKP-01254$5.95 -
HK91, G3 20 Round Magazines - Shooter Value - 36 Pack - Alloy
H&K Heckler & Koch
$244.95HK 91, G3, PTR Shooter Pack - 36 Pack of 20 Round Alloy Magazines Compatible With: HK G3 HK91 PTR Century Arms C308 SAR8, CETME Custom HK .308 clones or custom buildsHKP-16905$244.95 -
Out Of Stock
HK33, HK53, HK93, HK91, G3 Central Stock Section With Butt Pad
PTR
$99.95U.S. HK 91, G3, PTR Central Stock Section Black With Butt Pad Compliant parts are hard to find and are important for keeping your HK G3, HK 91, HK33, and 93 build 922r compliant. Compatible With: HK G3, 91, PTR CETME HK 93, 33, 53 Other...HKP-00379$99.95 -
On Sale
HK VP9, VP40, P30, P30L, P2000 Mag Pouch - Twin Paddle
Comp-Tac
Now: $65.95Was: $77.95Comp-Tac HK VP9, HK VP40, HK P30/P30L, HK P2000 Twin Paddle Mag Pouch The Comp-Tac Twin Magazine Paddle pouch is an outside the waistband holder that carries two magazines attached together. Designed to be worn at 9:00 for a right handed shooter this is...HKP-18398Now: $65.95Was: $77.95 -
On Sale
HK MP5K, MP5KN Barrel - 9mm - 5.85" - Threaded 1/2x28 with 3 Lug
RCM
Now: $139.95Was: $164.95RCM HK MP5K/N 9mm Barrel - Threaded 1/2x28 - 3-Lug Machined from a cold hammer forged blank to the latest MP5KN PDW specifications, this barrel features factory-correct, updated 16 flutes in the chamber. It is 3-lugged, threaded, and designed to...HKP-19330Now: $139.95Was: $164.95