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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HK CC9 Magazine +5 Extension Kit - 9mm
HKP HK Parts
$59.95HKP HK CC9 +5 Magazine Extension US-made +5 magazine extension for the HK CC9. This low-profile base pad increases a standard 15-round CC9 magazine to 20 rounds of 9mm. Machined from aircraft-grade...HKP-22467-M$59.95 -
Out Of Stock
B&T APC, SPC, GHM Super APC Trigger
Geissele
$378.95B&T APC, SPC, GHM Super APC Trigger Geissele limited edition trigger made specially for B&T firearms. The Super APC trigger features the same crisp, single-stage feel and quick reset of the Geissele...HKP-22416$378.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Pistol Grip - Tool Included
H&K Heckler & Koch
$159.95HK Heckler and Koch's Pistol Grip with tool - Black Factory German pistol grip in black.HKP-22208$159.95 -
On Sale
HK91, G3 Tactical Handguard - Low Profile
PTR
$70.09 - $109.95PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile Made from aircraft-grade aluminum, rock-solid, and lightweight. This forearm allows you to add up to 3 rails on your firearm. That includes...HKP-21806-M$70.09 - $109.95 -
HK91, G3 PTR ,Recoil Rod Assembly, Backplate - Painted
H&K Heckler & Koch
$54.95H&K HK91/G3 PTR & Recoil Rod Assembly-Backplate-Painted Our German HK backplate has been expertly refinished and Painted for exceptional durability. This backplate features an innovative guide screw...HKP-21647$54.95 -
Out Of Stock
HK416, MR556 Barrel - 5.56 - 11" - Threaded 1/2"x28 - A3
Nefarious Arms
$594.95Nefarious Arms HK 416/MR556 11" 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...HKP-21619$594.95 -
HK USC Stock Block to Picatinny Rail
HKP HK Parts
$149.95HKP HK USC Stock Block to Picatinny Rail The HKP USC stock block with picatinny rail offers superior adjustability for the stock of your choice. Each stock block is crafted from billet aluminum,...HKP-21594-M$149.95 -
On Sale
Ruger Precision Rifle Trigger Shoe
Tactical Precision MFG
Now: $14.96Was: $37.99TPM Ruger Precision Rifle Trigger Shoe This trigger shoe is a great addition to your RPR or any rifle with a blade safety type trigger, the shoe covers the trigger shoe deleting the blade safety...HKP-20903Now: $14.96Was: $37.99 -
On Sale
HK USC , UMP Top Rail
Other
Now: $74.96Was: $149.95Top Rail - HK USC / UMP TommyBuilt anodized aluminum high rise top rail. Includes mounting hardware. Compatible With: HK UMP <HKP-20744Now: $74.96Was: $149.95 -
HK MP5K, SP89 Flat Receiver - 9mm
HKP HK Parts
$199.95MP5K, SP89 Receiver Flat - 9mm New MP5K receiver flat made by the original German tool and die maker of the LSC receiver flat utilizing factory original German prints and specifications. The creator...HKP-20733$199.95 -
On Sale
HK MP5, MP5K Flash Hider - 3-Lug - Titanium - 9mm
HKP HK Parts
Now: $97.97Was: $139.95HKP MP5 9mm Titanium Flash Hider - 3-Lug Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This flash hider does not require the of threads as it attached to the 3 lug tip...HKP-20223Now: $97.97Was: $139.95 -
B&T Unigrip - Quick Detach - Aluminum
B&T Brugger & Thomet
$150.00B&T Quick Detach Aluminum Unigrip - Black This simple fore grip is designed to be mounted on the NAR/Picatinny rail of the gun. The grip is hollow and can be used as a storage compartment after...HKP-19473$150.00