Abrams Tank 120mm Ashtray - Item Ships in Approx. 3 to 4 WeeksDeemed as the Silver Bullet by the US Military, Lucky Shot USA brings you the 120MM TANK ROUND turned ASHTRAY. No man cave can be complete without the worlds most ambitious ashtray. Still considered to be the backbone of the United States Armed Forces, the M1A1 A2 Abrams main armament is its M 44 120MM smooth bore gun, firing a 120MM round. The shell casing of the round disintegrates when fired, leaving the heavy steel expended base of the round.