Providing shooters with a high quality scalable ar, armalite's m-15 defensive sporting rifle is everything you need.Light and strong at 6.1 lbs., the forged, flattop receiver with mil-std 1913 rail and 16" double-lapped, chrome-lined, chrome moly barrel combine to make a tough, dependable rifle that is easily accessorized to any configuration.The upper and lower receivers are forged from 7075-t6 aluminum with an anodized finish.This semi-automatic rifle is chambered in 5.56 nato/223 remington.It has a 6-position collapsible stock, 6" handguard, flash suppressor, and includes 30-round magpul pmag.This model has a railed gas block front sight base.Metal Finish: Black Hardcoat AnodizedAction: Semi-AutomaticCaliber: 223 Rem/5.56NATOBarrel Length: 16"Capacity: 30+1Trigger: Single-StageSafety: LeverOal: 32"-35.3"Weight: 6.1 lbsStock Description: 6-Position CollapsibleMuzzle: Flash SuppressorReceiver Material: 7075 T6 Aluminum ForgedSights: None, Optic ReadyBarrel Description: Chrome Moly Vanadium Chrome-LinedTwist: 1:7"Barrel Length Range: 16.00" to 17.99"Weight Range: 6.00 lbs to 6.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black