Davidson Defense 16" QPQ Melonite Nitride 300 Blackout Upper W/ 10" Super Slim Keymod Handgaurd

Current Stock:

Davidson Defense 16"  Melonite Nitride  300 Blackout Upper W/ 10" Super Slim Keymod Handgaurd



Upper Receiver: A4 Flat-Top, Forged by, Sigma DTA Bear Creek or Anderson

Barrel Length: 16"

Barrel Contour: H-bar

Barrel Material: chrome moly 4140 steel 

Muzzle Thread Pattern: 5/8x24

Barrel Finish: Black Nitride 

Twist Rate: 1 in 8" twist   

Chamber: 300 Blackout AAC

M4 Feed Ramps: Yes

Bolt Carrier: Optional

Charging Handle: Optional

Muzzle Device: A2 style
Gas System Length: Carbine

Gas Block Diameter: 0.750"

Handguard: 10" Super Slim Keymod Handgaurd

Sights: None


Something to note:  Blackout rounds burn off most of their powder within the first 6 inches of the barrel.  That is why the best blackout barrels all have pistol length gas systems.  As this is a carbine length gas system, using a lighter weight spring or buffer may be something that is needed for it to cycle correctly - especially with subsonic rounds.


Please note: If the listing says "in-stock" it means we have all of the items in stock. Our assembled upper receivers are made to order, and as such, it may take up to 10 business days for your order to be ready to ship out. If that is a problem, please email or call us to let us know!