A laser training shooting device adaptable for use in varying caliber barrels of a firearm insertable in said barrels simulating firing of the firearm without actuation of a trigger or a firing pin of the firearm. The laser device consisting of: a laser module composed of a transmitting assembly and optics package; a spud adapter in communication with the laser module, said spud adapter having contact beads for frictional engagement and alignment within said firearm barrel; and, an electrical lead having a means of attachment at a first end to the laser module and a micro-switch disposed within a trigger ring or a trigger hook at a second end positioned at the trigger of said firearm. The laser device being activated by pressing the micro-switch causing the emission of a laser light from the laser module.