Carbine Length; No gunsmith installation. Installs like factory plastic handguards.; Gen2 design with four anti-rotation QD sockets for push button swivels; Incredibly light weight, extremely solid lock-up with monolithic type continuous top rail; High quality 1913 mil spec rails, T-marked for location; Constructed from 6061 aluminum hard coat anodized; Compatible with most gas piston systems; 100% Made in the U.S.A.