M151A2 Fast Attack Vehicle Data Plate. 
From Wikipedia  "M151A2 FAV – Fast Assault Vehicle variant designed to be carried inside a CH-53 helicopter. Modification mainly involves adding a combination radiator grille armor plate and spare tire carrier, a field radio bracket between the front seats, roll bars or roll-cage, and high-beam lights. It has a heavy weapons pedestal mount post mounted on the rear deck (capable of carrying a Browning M2HB, Mark 19 Automatic Grenade Launcher or TOW II Missile). The rear bustles had brackets to mount large storage baskets and the front bustles had brackets to mount small storage baskets for fuel jerry cans or single ammo boxes."
 
Made  in USA from etched aluminum.