5.56x45mm NATO caliber; 16" barrel with a 1:8" twist 5R rifled barrel; 5R rifling profile has consistent contact with the projectile, ensuring a more accurate rifle; The 1:8 twist rate allows for more variety of ammo to be used; Threaded muzzle; 15" free-floating M-LOK handguard - Able to mount a multitude of aftermarket accessories; Mid-length gas system - Users can expect less felt recoil when shooting; 6-position adjustable stock; Ships with (one) 30-round magazine; Crimson Trace CTS-106 red dot optic installed; The battery life is greater than 50 hours