Subcutaneous emphysema is often found in car accident victims because of the force of the crash. Chest trauma, a major cause of subcutaneous emphysema, can cause air to enter the skin of the chest wall from the neck or lung. When the pleural membranes are punctured, as occurs in penetrating trauma of the chest, air may travel from the lung to the muscles and subcutaneous tissue of the chest wall.
Both the Army and the Marine Corps teach that the maximum effective range of the M16A2/A3/A4 is 500 meters on a point target (individual enemy) and 800 meters on an area target (i.e. troops in the open).
Xploderz Blasterz can shoot huge ranges of 50 to 85 feet; They carry almost 75 rounds of ammo before you will need to reload; With the H2Grow Ammo Technology you have the power to create hundreds of rounds of ammo that can be shot farther.