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 MP5 Barrel - 9mm - Threaded 1/2x28 with 3 Lug
B&T Brugger & Thomet
Now: $341.06Was: $378.95B&T HK MP5 9mm Barrel - Threaded 1/2x28 - 3-LugHKP-17955Now: $341.06Was: $378.95 -
On Sale
AR-15 Mil-Spec Buffer Tube Kit
HKP HK Parts
Now: $38.66Was: $42.95Mil-Spec Buffer Tube Kit Compatible With: AR-15 style platforms Not correct length for HK riflesHKP-02735Now: $38.66Was: $42.95 -
HK MP5, MP5K, AP5, AP5-P Rear Sight Drum
MKE
$32.95MKE AP5, AP5-P, HK MP5, MP5K Rear Sight Drum This rear sight drum is manufactured by MKE for AP5 and AP5-P firearms and fits MP5 and MP5K pattern rifles and pistols. It is commonly used as an upgrade...HKP-22490$32.95 -
On Sale
HK MP5, MP5K Cocking Handle - Skeletonized
HKP HK Parts
Now: $36.77Was: $45.95HKP HK MP5, MP5K Extended Cocking Handle - Skeletonized Skeletonized extended cocking handle for MP5 & MP5K firearms. Designed to also function with UTG monolithic M-LOK handguards. Made from solid...HKP-22273Now: $36.77Was: $45.95 -
On Sale
HK P30 Competition Magwell
HKP HK Parts
$31.47 - $44.95HKP HK P30 Competition Magwell The HKP competition magwell for the P30 features a flared aperture to guide the next mag in for faster mag swaps. Great for competitive shooters and everyday...HKP-22255-M$31.47 - $44.95 -
Out Of Stock
HK416, MR556 Magazine - 30 Round - Maritime- TiN
H&K Heckler & Koch
$149.95HK 416 & MR556 30 Round Maritime Magazine - TiN Coated Get your hands on some TiN coated factory Heckler & Koch magazines. Each magazine starts out as a fresh 30 round mag before being...HKP-21468$149.95 -
On Sale
HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Supersonic Boom Boom
Zenith
Now: $30.77Was: $43.95Zenith 30 Round HK MP5 Supersonic Labeled Magazine Easily identify a magazine loaded with supersonic rounds versus a magazine loaded with subsonic rounds. Features: DurHKP-20830Now: $30.77Was: $43.95 -
HK USP Compensator for Threaded Barrel - 9mm, .40 S&W
HKP HK Parts
$199.95HKP HK Parts Compensator for Threaded Barrel for HK USP 9/40 The HK Parts USP 9/40 compensator will add a sleek and tactical look to your USP. With the quick and easy addition of our compensator you...HKP-20820$199.95 -
On Sale
HK MP5, SP5 Trigger Housing - AR - 9mm
Magpul
$191.22 - $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...HKP-20727-M$191.22 - $299.95 -
HK416, MR556, MR762 Selector Lever Axle- Semi Auto
H&K Heckler & Koch
$44.95H&K HK MR556/MR762/416 Semi Auto Axle For Selector Lever HK German safe, semi selector axle for the MR 556 & HK 416 family of firearms. All steel construction.HKP-15433$44.95 -
HK G36 Retractable Buttstock - 4 Position - Folding
H&K Heckler & Koch
$329.95HK G36, G36k, G36C, & SL8 Conversion Rear Stock Assembly The G36 KV stock, as it is known, was built by HK for a military contract and is built HK tough with an overall length of 8.5 inches (fully...HKP-02682$329.95 -
HK51 Barrel - 7.62 / .308 - 8.375" - Threaded 15x1 RH
RCM
$164.95RCM HK 51 (7.62x51/.308) Barrel - Threaded 15x1 RH Crafted to precise HK51 specifications, this barrel utilizes HK's renowned cold hammer forged (CHF) process. Features include a knurled sight ring,...HKP-02391$164.95