Firearm having dual barrels

A firearm having dual barrels comprising:

• a firearm body 10 which is equipped with a small caliber barrel 11 which fires small caliber regular bullet, and a large caliber barrel 12 which fires explosive bullet, the regular bullet or explosive bullet being selectively fired through a trigger 13;
• a selector 15 installed on one side of the firearm body 10 to select the type of bullet and the mode of firing;
• a fire control system 20 installed on the firearm body 10 to enable aiming the target through detecting the target both at day and night time and to provide a firing data for explosive bullet by measuring the distance to the target;
• a firearm switch unit 17 installed on the firearm body 10 to transmit the information on the firing of the bullet which is additionally input by the user to the fire control system 20;
• a fuse setter 18 installed on the large caliber barrel 12 of the firearm body 10 to transmit the control signal of the fire control system 20 to the fuse of the explosive bullet which is introduced into the large caliber barrel 12;
• and a sensor device unit 19 installed on the firearm body 10 to transmit the position of the selector 15 and sensed firing signal to the fire control system 20.