5.56x45 mm Caliber 16 inch Barrel with a 1:8 twist Polymer Carbon Fiber Infused Buffer Tube Polymer Carbon Fiber Infused Lower Reciever Polymer Upper with Metal Inserts Nano SAF-T-FIRST Trigger 15 inch M-LOK Rail 30rd Mag Flip-up Sights ATI SR-1 Stock 6.0 Lbs
