The su-16 series is designed, engineered and crafted to be the perfect everyman's sport and utility rifle, whatever your model and configuration preference.These gas operated, semi-loading rifles accept standard ar-15 magazines, with the ability to store one or two spare magazines in the stock.Metal Finish: GreenAction: Semi-AutoCaliber: 5.56x45mm NATOBarrel Length: 16"Capacity: 10+1Oal: 35.90"Weight: 4.70 lbsStock Description: Fixed Black SyntheticMuzzle: ThreadedReceiver Material: SteelSights: A2 Front/Adjustable RearBarrel Description: Black Nitride BarrelTwist: 1:7"Barrel Length Range: 16" to 16.99"Weight Range: 4 lbs to 4.99 lbsHand: RightStock Finish Group: GreenMetal Finish Group: Green