SN: 16446498. Lower receiver was made in 2016 & was paired with an M4 profile flat-top upper with standard handguards made by DPMS. The 16-inch barrel is 1 in 9 twist & has a traditional A1 type front sight base as well as an A2 type flash suppressor. Bore is bright with strong rifling. The receiver has aftermarket fire control components in it & the carbine length buffer tube has a plastic 6-position collapsible waffle stock. The M16 type bolt carrier is equipped with an ""MPI"" marked bolt. Comes with a black nylon ""silent"" sling, a detachable carry handle with A2 type windage adjustable rear sight assembly & a plastic ""shoot through"" muzzle cap.