Mil-Spec Upper or Gen 2 Billet Upper without Forward Assist 

15" Handguard

18” Nitride Barrel 

Heavy Contour

Carbine Length Gas System

Standard Gas Block

1:16 Twist 

5/8x24 Thread

Thread Protector

Dual Charging Handle 

BCG

Our rifle barrels come with a sub-MOA guarantee when using good ammo and proper shooting techniques. 

*H1 buffer weight recommend for 400 uppers.