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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Uzi Top Cover Complete - Surplus
IMI
$24.95Uzi Top Cover Complete - Surplus IMI Uzi SMG top cover surplus. Perfect working condition.$24.95 -
On Sale
HK91, G3, AP51 Magazine - 20 Round - Translucent
MKE
Now: $20.76Was: $25.95MKE HK G3/91, AP51 20 Round Translucent Magazine Constructed from high-strength, lightweight polymer, this magazine offers exceptional durability while allowing for instant visual ammo checks thanks to its clear body design. Whether you're training, on...Now: $20.76Was: $25.95 -
HK Mark 23 Picatinny Rail Adapter - Gen 2
HKP HK Parts
$99.95HK Mark 23 Picatinny Rail Adapter (SOCOM) - Gen 2 The original Mark 23 rail adapter mount provides for a seamless attachment point of any tactical light, laser setup that attaches by way of a Picatinny rail. These units have been tested in the harshest...$99.95 -
MP5 Folding Stock - 9mm
B&T Brugger & Thomet
$325.00B&T MP5 Folding Stock - 9mm - For All MP5 Full Size Variants Swiss-made B&T folding stock for the MP5 & HK94. This is a military-grade stock as supplied by B&T to HK Germany. B&T Switzerland has supplied these to law...$325.00 -
HK P30 Series Magazine Release - Enhanced
HKP HK Parts
$49.95Enhanced Magazine Release - Alloy - HK P30, P30SK, P30L New HK Parts Enhanced and Over-sized Magazine Release. The oversized magazine Release increases the overall surface area and makes it possible to release the magazine without changing the...$49.95 -
HK91, G3, HK93 Stock or Brace Adapter - with Mil-Spec AR Buffer Tube
HKP HK Parts
$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...$124.95 -
Out Of Stock
HK MP5SD Barrel - 9mm - 5.74" - Threaded 18x1
RCM
$199.95RCM HK MP5SD 9mm Barrel - Threaded 18x1 RCM HK Style MP5 SD Barrel. Specifications: Made In The USA Cold Hammer Forged Steel (CHF) 16 Fluted Chamber Threaded 18x1 Overall Length 5.74" Nitride Finish To Entire Surface Of Barrel Inside &...$199.95 -
HK MP5 Handguard - Tri-Rail
MI Midwest Industries
$169.95MI HK MP5 Tri-Rail Handguard Features: Professional grade one-piece design Tri-Rail 1913 Picatinny on 3 sides for accessory attachment Simple installation includes all tools Extremely lightweight design Features two anti-rotation QD sling swivel...$169.95 -
HK91, G3, HK33, HK93 Grip for Metal Frames - Surplus
H&K Heckler & Koch
$7.95H&K HK G3, HK 91 Grip for Metal Frames - Surplus Used in surplus condition. Each item is used in good shape and will clean up nicely with a little bit of TLC and some attention. A great value for the price. Compatible With: HK G3 HK...$7.95 -
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...$75.00 -
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...$4.95 -
HKP 22 Round HK VP9, HK P30 Complete Magazine - 9mm
HKP HK Parts
$79.95HKP 22 Round HK VP9, HK P30 9mm Complete Magazine Drop in magazine ready to go! HK Parts takes an existing 17 round magazine and a +5 magazine extension to assemble them into a working 22 round magazine. ***Magazines may have either Black or...$79.95