Sig 516 gen 2 piston AR15 with Sig Romeo red dot. near Goodlettsville, Nashville, TN

Sig 516 gen 2 piston Ar15. 5.56/223. Back up iron night sights. Sig Romeo msr red dot optic. Knights armament rail panels. Comes with 30 round mag, original factory box. Asking 1575$ obo