A fusion-powered chainsaw which requires two hands to use. The weapon is heavy, but deals considerable damage. It also can cut through armor and ignore damage threshold and resistance. Unlike most melee weapons, holding down the attack button when wielding the chainsaw will cause continuous damage to targets in contact with the blade.
It has a special "Scrap Heap" V.A.T.S. attack that does and 50% damage at the cost of 45 AP.
Prior to patch 126.96.36.1992, the chainsaw had 800 item HP, did 100 damage on a normal 'swing', could not critically hit, and did not ignore target armor. The 'Scrap Heap' attack also previously cost 75 AP to use, and resulted in a 25% damage bonus.