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
HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28- A3 - Light
Nefarious Arms
Now: $504.95Was: $594.95Nefarious Arms HK 416/MR556 14.5" A3 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting. Grab this expertly crafted barrel for your next SBR or pistol build. Compatible With: HK 416 A1,...HKP-21589Now: $504.95Was: $594.95 -
On Sale
HK416 Flash Hider - Birdcage Style - .22 LR
HKP HK Parts
Now: $31.95Was: $39.95HKP HK 416 .22 LR Flash Hider - A5 Birdcage Style Upgrade your 416 .22 pistol with a direct mount on flash hider featuring a sleek A5 birdcage style for a truly custom look. Built to last with the highest quality and nitride finish. Thread: 8x...HKP-21577Now: $31.95Was: $39.95 -
On Sale
HK SL8 to G36 Stock Block - Conversion - Sling Pin - Picatinny Rail
HKP HK Parts
Now: $119.95Was: $149.95HKP HK SL8/G36 Conversion Stock Block with Picatinny Rail SL8 to G36 stock block with Picatinny rail offers superior adjustability for the stock of your choice, making it an excellent choice for SL8 conversion projects. Crafted from billet and cerakoted...HKP-21574-MNow: $119.95Was: $149.95 -
On Sale
HK UMP, USC Sling Pin, Stock Block B
HKP HK Parts
Now: $39.95Was: $49.95HKP Stock Block B Sling Pin for HK UMP, and HK USC .40 S&W / .45 ACP / 9mm The original thumb screw version for all stock block B's. Compatible with: UMP9 UMP40 UMP45 USCHKP-21504Now: $39.95Was: $49.95 -
Out Of Stock
HK VP9 R3D 2.0 Night Sights - Orange
XS Sights
$127.95XS Sight Systems VP9OR R3D 2.0 Night Sights - Orange 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 requires 50% less force for installation. R3D sights...HKP-21465$127.95 -
Out Of Stock
HK416C Upper Receiver Kit - 9"
HKP HK Parts
$2,799.95HK416C Complete Upper Kit - 9" Our complete 416C upper kit includes everything you need to pair with a mil-spec lower or an STS 416C lower. For that genuine look, the STS 416C lower with the correct 416C stock eyelets is as good as you can get...HKP-21042$2,799.95 -
Out Of StockOn Sale
B&T TP9, MP9 Holster - Camo - Swiss Military
B&T Brugger & Thomet
Now: $74.95Was: $125.00B&T TP9/MP9 Camo Holster - Swiss Military The B&T TP9 tactical leg holster is perfect for your TP9 or MP9 Pistol. This drop leg holster is fully adjustable both up and down and tightness around the leg. If you're looking for a tactical holster...HKP-20980Now: $74.95Was: $125.00 -
On Sale
HK USP Grip Wrap - Rubber - 9mm / .40 S&W
Talon Grip
Now: $17.95Was: $19.99TALON Grip - USP Full Size 9mm/.40 - Rubber Black TALON grips are textured, stick-on gun grips that help you get a secure hold on your firearm improving performance, safety, and confidence so you maintain control. Installation is quick and easy.The...HKP-20283Now: $17.95Was: $19.99 -
HK VP9, P30 Magazine - 24 Round - Red - 9mm
HKP HK Parts / Heckler & Koch
$89.9524 Round Magazine Complete - Red - 9mm - HK PARTS - HK VP9, HK P30 HK Parts +7 alloy magazine extension coupled with an HK 17 round factory German magazine adds 7 additional rounds total for a fully assembled 24 round HK VP9/P30 magazine. Ideal for...HKP-19838$89.95 -
HK416, MR556 M-LOK Compatible Handguard - 12.5"
H&K Heckler & Koch
$224.95H&K HK MR556/HK416 12.5" M-LOK Compatible Handguard Manufactured by HK from aircraft grade aluminum with a black hard coat anodized finish, this M-LOK handguard is designed for the Heckler & Koch MR556 & HK 416 rifles chambered in 5.56x45mm...HKP-19695$224.95 -
Out Of Stock
HK UMP, USC Lower Bolt Catch
HKP HK Parts
$22.95HK UMP & USC Bolt Catch For Last Round Hold Open New HK USA lower bolt catch. Compatible With: HK UMP HK USCHKP-19565$22.95 -
On Sale
HK VP9SK Holster - Infidel Ultra Max - RH
Comp-Tac
Now: $76.95Was: $96.95Infidel Ultra Max Holster - Right Hand - VP9SK The Infidel Ultra Max Holster is an Inside the Waistband Kydex and leather hybrid holster designed for concealed carry. The Infidel Ultra Max is designed with cant adjustment holes to allow the user to...HKP-19329Now: $76.95Was: $96.95