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 P30, VP9 Magazine Extension Kit - +10
HKP HK Parts
$64.95HKP + 10 HK P30, VP9 Magazine Extension Kit HK Parts +10 magazine extension kit adds 10 additional rounds to the HK VP9/P30 magazine with the simple swap of the floor plate and highly reliable mag spring. This is an easy 2 minute...HKP-19455-M$64.95 -
On Sale
HK VP9, VP9SK, VP40 Hex Button Quick Detach Slide Plate
HKP HK Parts
Now: $26.85Was: $34.95HKP HK VP9, VP9SK, VP40 Hex Button Quick Detach Slide Plate The HK Parts Quick Detach Slide Plate for the HK VP series of pistols is ideal for those that want the ability of quickly and efficiently access the firing pin, sleeve assembly. The quick...HKP-18111-MNow: $26.85Was: $34.95 -
HK VP9, P30 Magazine, Complete - 20 Round - Red
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 -
HK VP9, VP9SK, VP40 Insert
H&K Heckler & Koch
$24.95H&K HK VP9/VP9SK, HK VP40 Insert Insert for HK VP9, VP40. Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40HKP-16801$24.95 -
HK USP Tactical Barrel - .40 S&W - 4.86" - Threaded 14.5x1 LH
RCM
$225.00RCM HK USP .40 S&W Tactical Barrel - Threaded 14.5x1 LH Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest replacement barrel for the HK USP full-size .40...HKP-17745$225.00 -
Out Of Stock
HK45C Tactical Barrel - .45 ACP - 4.57" - Threaded .578x28 RH
RCM
$250.00RCM HK 45C .45 ACP Tactical Barrel -Threaded .578x28 RH This HK45C & HK45C Tactical threaded barrel is designed for compatibility with a wide range of flash hiders and sound suppressors. Unlike the factory HK45C Tactical barrel with 16x1 LH...HKP-17449$250.00 -
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 -
HK Mark 23 Barrel - .45 ACP - 6.02" - Non-Threaded
RCM
$250.00RCM HK Mark 23 .45 ACP Barrel - Non-Threaded Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished inside and out with an ultra-desirable nitride coating. This is the finest replacement barrel available for the HK Mark...HKP-16561$250.00 -
Out Of Stock
HK USP Light and Laser Mount - TLR-4 - Red
Streamlight
$229.95Streamlight TLR-4 Light and Laser - Red for HK USP Features: White LED with Red Laser Ambidextrous momentary/steady On-Off switch One-handed snap-on and tighten interface keeps hands away from the muzzle when attaching/detaching Securely fits a broad...HKP-16916$229.95 -
HK21E Ammunition Belt Box - 7.62x51 / .308
Michaels Machines
$674.95HK21E & MM21E Belt Box Brand new HK21E, MM21E US made feed box. The German units have long since been out of production. These are exact replicas of the German units. Made in the USA. Compatible With: HK21E MM21EHKP-17752$674.95 -
HK G3 Parts Kit
H&K Heckler & Koch
$397.95HK German G3 .308/7.62 X 51mm Surplus Parts Kit Each parts kit comes with all parts from a functional HK G3 full auto rifle that was demilled into a parts kit except for the barrel and receiver. Each part of the parts kit will vary from fair to excellent...HKP-00827$397.95 -
Ergo M-LOK Handstop
Ergo
$54.95M-LOK Hand Stop/Barricade Stop in Black Features: Aggressive textured front for enhanced traction on barricades and obstacles Low profile base also functions as a comfortable hand stop Black anodized 6061-T6 aluminum Fits all M-LOK style forearms or...HKP-17852$54.95