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
-
Out Of Stock
HK416, MR556 E1 Buttstock - Factory - Commercial
H&K Heckler & Koch
$199.95H&K HK MR556/416 Commercial Factory E1 Stock HK 416 factory German E1 Stock latest HK German stock for all HK 416/MR556 rifles. This HK 416 HKE1 Buttstock fits Commercial buffer tubesHKP-15426$199.95
HK USC Magazine Release
H&K Heckler & Koch
$19.95Heckler and Koch .45 ACP Carbine Magazine Release for HK USC This is a great replacement as they are prone to breakage and wear. Please Note: For those that have a HK USC with a bullet button and are...HKP-02196$19.95On Sale
HK G3K Cocking Tube
PTR
Now: $116.96Was: $129.95G3 Cocking Tube For PTR 91K Or G3K Projects - New Perfect for that custom HK build. These are made by PTR to the correct specifications. We do not use cut-down or Pakistani materials, we only use the...HKP-01462Now: $116.96Was: $129.95
HK Selector Catch Lever - Ambi Trigger Packs
H&K Heckler & Koch
$26.95HK German Ambidextrous Trigger Pack Axle Catch Lever This is the lever that allows you to take apart any of the ambidextrous trigger packs. This lever takes the spring tension off the left and right...HKP-01636$26.95On Sale
Flip Front and Rear Sight Set Complete
GSG German Sports Guns
Now: $134.96Was: $179.95GSG German Sports Guns Flip Front & Rear Sight Set Complete New MP7A1 style flip up front & rear sight set. Includes iron sights (folded down) for low profile sighting system and can also be deployed...HKP-18772Now: $134.96Was: $179.95On Sale
HK VP9 R3D 2.0 Night Sights - Green
XS Sights
Now: $123.75Was: $137.49XS Sight Systems VP9OR R3D 2.0 Night Sights - Green Their second-generation R3D night sights are engineered to give you a brighter stronger set of sights. Easily install their sights with a set that...HKP-21466Now: $123.75Was: $137.49
HK91, G3 Locking Piece - 45 Degree - USED
H&K Heckler & Koch
$14.95Heckler and Koch German Locking Piece for HK G3 and HK91- USED This is the factory correct 45 degree locking piece for HK91 and G3 firearms. Used pulled from de-milled firearms and will range in...HKP-16712$14.95On Sale
HKP Shirt - Long Sleeve - OD Green
HKP HK Parts
Now: $12.72Was: $19.95HKP Long Sleeve Shirt - OD Green Get your hands on some of our premium new apparel! Featuring our sleek new logo printed over soft cotton, this shirt is certain to catch an eye at the...HKP-21025-MNow: $12.72Was: $19.95
HK45 Compact Barrel - .45 ACP - 3.94" - Non-threaded
H&K Heckler & Koch
$234.95HK45C German Barrel Genuine Heckler & Koch HK45 Compact standard length, non-threaded, factory barrel. This is a great item to have as a spare.HKP-01641$234.95
HK USP Barrel - 9mm - 4.25"
H&K Heckler & Koch
$319.95H&K USP 9mm Full-Size Barrel HK factory German HK cold hammer forged barrel. New date-coded and serialized barrel. Compatible With:HKP-01527$319.95
HK USPC, P2000 Magazine Floorplate - 9mm - 10 Round - Pinky Rest
H&K Heckler & Koch
$24.99H&K 10 Round HK USPC/P2000 9mm Floor Plate w/ Pinky Rest Compatible With: HK USP Compact 9mm HK P2000 9mmHKP-01201$24.99Out Of Stock
HK USPC, USPC Tactical Conversion Barrel - .40 S&W to .357 SIG - Non-Threaded
RCM
$237.50RCM HK USPC .40 S&W to .357 SIG Caliber Conversion Barrel - Non-Threaded Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This...HKP-17747$237.50