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
B&T Short Style Vertical Foregrip - Picatinny - Black
B&T Brugger & Thomet
$75.00B&T Short Style Vertical Grip - Picatinny - Black B&T Vertical Grip - Short Style- Fixed Swiss made B&T short vertical forend grip. This foregrip is designed to be easily attached to the picatinny rail using the knurled screw. Made of black...HKP-18426$75.00 -
Out Of Stock
HK33, HK53, HK93 Magazine - 40 Round - Used
H&K Heckler & Koch
$80.00HK33, HK53, HK93 Magazine - 40 Round - Used - Genuine German HK HK Factory German 40 round surplus magazine. This factory magazine is long since out of production and is made from aluminum, steel and polymer. Used condition. A rare find and only...HKP-19761$80.00 -
On Sale
HK91, G3, HK93 Stock or Brace Adapter - with Mil-Spec AR Buffer Tube
HKP HK Parts
Now: $93.95Was: $124.95HKP HK Mil-Spec AR Brace/Stock Adapter & Buffer Tube AR15 to HK 90 series stock adapter for AR15 stocks that includes the mil-spec buffer tube and castle nut to use any mil-spec AR15/M16 stock of your choice on your HK rifle or SBR build. With the...HKP-16583Now: $93.95Was: $124.95 -
HK USP, USP Tactical Magazine Spring - .45 ACP - 12 Round
H&K Heckler & Koch
$5.95HK Pistol Magazine Spring This is a must-have spare part for all HK pistol owners. HK recommends that for optimum performance, you change out the magazine springs often and swap them regularly when keeping the pistol magazines loaded for long periods...HKP-01426$5.95 -
On Sale
HK VP9, VP9SK Reflex Sight - Direct Fit SCS
Holosun
Now: $323.95Was: $359.95Holosun HK VP9 SCS-MOA Reflex Sight This solar charging sight is designed to attach directly to the slide without an adapter plate and uses an innovative solar charging system with multi-directional light sensors to automatically adjust brightness in...HKP-21336Now: $323.95Was: $359.95 -
HK Pistol O-Ring - .40 S&W Green
H&K Heckler & Koch
$4.95O-ring for .40 caliber barrels Features: Original green color no longer in production Same high-temperature rubber as the newer black O-rings Factory part that provides the seal between the slide and the barrel Provides a secure lockup and increased...HKP-01985$4.95 -
HK VP9, P30 Magazine Spring
H&K Heckler & Koch
$6.95HK VP9, VP40 & P30, P30S & P30L - Magazine Spring A must-have replacement item as magazine springs should be replaced regularly as this is a consumable part and is prone to wear and tear. Compatible With All Standard Capacity 9mm & .40...HKP-01613$6.95 -
On Sale
HK USP Magazine - 20 Round - 9mm
HKP HK Parts
Now: $71.95Was: $89.95HKP 20 Round HK USP/Tactical 9mm Magazine HK USP 9mm Tactical +5 magazine extension paired with a new full-size HK USP 9mm & USP 9mm Tactical 15-round magazine. This part is ideal for competitive shooters, concealed carry, or everyday use while at...HKP-21094-MNow: $71.95Was: $89.95 -
On Sale
HK UMP, USC Picatinny Rail Screw
Now: $0.60Was: $0.75HK UMP/USC (.40 S&W/.45 ACP/9mm) Picatinny Rail Screw Good spares to have on hand as screws can get damaged or lost.HKP-16562Now: $0.60Was: $0.75 -
HK91, G3 Firing Pin Spring
H&K Heckler & Koch
$9.95HK German HK G3, HK91, & PTR Firing Pin Spring This is a common repair and replacement item and is great for spares as this is a common breakage part.HKP-00498$9.95 -
HK USP45, Mark 23 Magazine, Complete - 22 Round
HKP HK Parts / Heckler & Koch
$149.95HKP and HK .45 ACP 22 Round Complete Magazine for HK Mark 23 and HK USP HK Parts takes an existing 12 round mag the +10 mag extension and assembles them into a working 22 round magazine. This offering is a valuable option for those that need a...HKP-21372-M$149.95 -
HK USP Pistol Armorers Manual
H&K Heckler & Koch
$19.95HK USP Pistol Armorers Manual Each manual has 34 pages in total and fully covers the USP better than any other manual available. Also contains parts numbers and many diagrams. This is the newest USP manual available with updated pictures. Each manual...HKP-00725$19.95