Colt M4 Carbine. 5,56 cal. auto carbine. Serial# LE316169. Excellent like new condition. 16” M4 profile   barrel with 1-7 twist and an excellent bore. Matte black finish is 99%.  Magpul Moe handguard, grips and  6 position stock. A3 upper with Magpul Mbus  rear flip up sight. F marked front sight. Super nice and  super clean.