The fn 15 military collector series m16 is a military-replica rifle made to fn's exacting specifications.This semi-automatic rifle features an m16-profile, 20-inch, 1:7" rh, button-broached, and chrome-lined barrel.The uid-labeled lower receiver is equipped with an ambidextrous selector switch.Metal Finish: BlackAction: Semi-AutoCaliber: 5.56x45mm NATOBarrel Length: 20"Capacity: 30+1Safety: AmbidextrousOal: 39.50"Weight: 8.20 lbsStock Description: A2 FixedMuzzle: A2 CompensatorReceiver Material: AluminumSights: A2 Front/Adjustable RearBarrel Description: Button-Broached Chrome-LinedTwist: 1:7"Barrel Length Range: 20" to 20.99"Weight Range: 8 lbs to 8.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black