Machine Gun (Tommy Gun) 3D model

The Machine Gun is the second ranged weapon obtained in BioShock, and can be first located in Emergency Access in the Medical Pavilion. It fires a rapid spray of Auto Rounds, each doing a moderate amount of damage, and comes with two variants for organic and armored enemies. Its main weaknesses are heavy recoil and low accuracy. Its main advantages are large ammo capacity and higher damage-per-second, ignoring headshot bonuses and better specialty ammo enjoyed by the Pistol and Crossbow. The damage can be increased and the recoil reduced with upgrades at a Power to the People station, increasing the Machine Gun's effectiveness. There is no hit location damage bonus when using this weapon; bullets do the same amount of damage no matter where the target is hit.
(Wiki)