This is a Windham Weaponry Rifle: Semi-Auto known as the R16 chambered in 5.56 NATO|223, model # R16M4SFSCT, UPC 848037058614
Model Series: R16
Gun Type: Rifle: Semi-Auto
Caliber: 5.56 NATO|223
Action: Semi-Automatic
Capacity: 30+1
Finish: Black matte
Stock: Magpul CTR Carbine Stock W/Magpul ASAP QD Point
Sights: Adj Front/ Rear/Magpul MBUS Pro Metal Sights
Barrel Length: 16 M4 Profile Chrome Lined
Overall Length: 32.375 Collapsed/ 36.125 Extended
Features: 15 Windiam Weaponary MLOK Rail