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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Out Of Stock
HK P30 Barrel - 9mm - 4.45" - Threaded 1/2x28 RH
RCM
$225.00RCM HK P30 9mm Barrel - Threaded 1/2x28 RH Each barrel is finely and painstakingly made from ordnance grade steel, heat treated and finished inside and out in the ultra- desirable nitride finish. This is the finest threaded replacement barrel available...HKP-20824$225.00 -
On Sale
HK MP5K Vertical Foregrip - OD Green
HKP HK Parts
Now: $27.95Was: $34.95MP5K Vertical Grip O.D Green - USA New OD green MP5K K-Grip handguard for MP5K and the ever popular MP5K-Reverse stretch models. Now you can further customize your MP5K and SP5K with this new color grip and, best of all, it counts as 1 U.S compliant part...HKP-20592Now: $27.95Was: $34.95 -
Out Of Stock
HK45, HK45T Barrel - .45 ACP - 5.11" - Threaded 16x1 LH
H&K Heckler & Koch
$297.95H&K 45 .45 ACP Tactical Barrel - Threaded 16x1 LH New HK45 German factory cold hammer forged threaded barrel for use with flash hiders or sound suppressors. This is a drop-in barrel for any of the HK45 full-size pistols. No gunsmith is required as...HKP-01207$297.95 -
On Sale
HK Mark 23, SOCOM Firing Pin - Titanium
HKP HK Parts
Now: $39.95Was: $49.95Ultimate Firing Pin Mark 23, Socom - Titanium - Grade 6 A solid billet CNC offering at 40+% lighter than comparable steel firing pins. Our titanium firing pins travel faster in the slide, delivering a quicker lock time & enhancing accuracy. Titanium...HKP-17803Now: $39.95Was: $49.95 -
HK USP 9mm, .40 S&W Magazine Loader
H&K Heckler & Koch
$19.95H&K HK USP 9mm / .40 S&W Magazine Loader - Black Factory new Heckler & Koch. Compatible With: HK USP 9mm HK USP .40 S&W HK USP .357 SIG Please Note: This does not fit USP .45 magazines.HKP-01165$19.95 -
On Sale
HK51, PTR PDW Fixed Stock
PTR
Now: $254.95Was: $299.95PTR Fixed Stock for HK51 and PTR PDW 7.62x39 and 7.62x51 / .308 Each stock is constructed of new U.S. & German HK parts. This stock also counts as one U.S. 922r compliant part. Perfect for those that have registered sears or want to SBR your...HKP-02408Now: $254.95Was: $299.95 -
HK MP5, SP5K Buffer, Folding Stocks and End Caps
H&K Heckler & Koch
$24.95H&K MP5/SP5/MP5K/SP5K Replacement Buffer For Factory End Cap or Folding Stock This item is a Heckler & Koch Genuine Part, used to replace the factory HK buffer on MP5/SP5/MP5K/SP5K folding stocks and end caps. This is only usable on the factory...HKP-01233$24.95 -
On Sale
HK MP5, MP5K, HK93, HK91 Handguard Bracket Screw - Tactical
PTR
Now: $1.45Was: $1.95PTR Tactical Handguard "U" Shaped Bracket Screw Replacement screw for the "U" shaped hangar on the tactical handguard. There are a total of 3 screws used, they are all the same for the MP5k, MP5, HK93 & HK91 tactical handguards. Great spare to have...HKP-17318Now: $1.45Was: $1.95 -
Out Of Stock
HK MP5 3 Position 0,1,F Navy Housing
HKP HK Parts
$169.953 Position 0,1, F Navy Ambidextrous Grip Housing - US MADE US-made Navy ambidextrous grip housing, ideal for any factory German ambidextrous trigger pack or US-made trigger pack. This offering counts as one US-made compliant part. Not compatible with...HKP-18196-M$169.95 -
HK MP5K Apparel - Hats, Patches, and Shirts - V2
HKP HK Parts
$0.00HKP HK MP5K Apparel and Patch Collection - Version 2 Represent your platform with the HK Parts K Series apparel and accessories lineup. Built for enthusiasts who appreciate iconic firearms and clean, understated design, this collection delivers premium...HKP-22455-M$0.00 -
HK VP9, P30, P2000 Backstrap Pin Punch
H&K Heckler & Koch
$9.95H&K VP/P30/P2000 Backstrap Pin Punch Pin punch designed for removing and installing the backstrap pin on select H&K pistol models. Sized at 7/64", this tool ensures a proper fit without damaging the frame or pin. Compatible With HK VP9/VP9SK HK...HKP-21973$9.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Pistol Grip with Tools - RAL8000
H&K Heckler & Koch
$159.95Heckler and Koch's Pistol Grip With Tools - RAL 8000 HK German grip with HK tools stowed in the grip's storage compartment. Finish your HK build with our favorite grip or upgrade your AR-15 platform. Compatible With: HK 416 HK MR556 HK417 HK...HKP-21462$159.95