Safety mechanism for firearm

A safety mechanism for a firearm comprising:

• a cam selector;
• a lever;
• a trigger;
• the cam selector comprising a first end, a second end, a top side, and a bottom side;
• the cam selector comprising a longitudinal slot positioned on the top side of the cam selector;
• the lever comprising a proximal end and a distal end;
• the longitudinal slot being configured to receive the proximal end of the lever;
• the cam selector further comprising a first recess and a second recess on the bottom side of the cam selector;
• the trigger comprising a first trigger tail portion;
• the cam selector being configured to operate between a first mode, a second mode, and a third mode;
• wherein the first mode of the cam selector is configured to allow the first trigger tail portion to be movable within the first recess, wherein the second mode of the cam selector is configured to allow the first trigger tail portion to engage the second recess and be moved down by a cam portion of the second recess when the cam selector rotates, and wherein the third mode of the cam selector is configured to prevent the trigger from being pulled.