S&w m&p15 rifle is the ideal modern sporting rifle.It is versatile, reliable, and built to perform multiple uses under various conditions.It is also lightweight and rugged which embodies the best combination of function and form.The sport ii optic-ready rifle features a crimson trace red-green dot optic sight which provides an out-of-the box sight solution on your optics ready rifle.With both red or green dot reticles, the you can pick the color and the intensity of the dot that works best for them.It also utilizes a gas block with an integral picatinny-style rail, armornite finish on the barrel both on the interior and exterior, and a forward assist and dust cover.Metal Finish: BlackAction: Semi-AutoCaliber: 5.56x45mm NATOBarrel Length: 16"Capacity: 10+1Safety: Manual ThumbOal: 35"Weight: 7.15 lbsStock Description: FixedMuzzle: ThreadedReceiver Material: AluminumSights: Optic ReadyBarrel Description: 4140 SteelTwist: 1:9"Barrel Length Range: 16" to 16.99"Weight Range: 7 lbs to 7.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Blued/Black