Currently in use by US troops, the M4 is a shorter and lighter version of the M16A2 assault rifle, achieving 80% parts commonality with the M16A2. The M4 has selective fire options including semi-automatic and three-round burst (like the M16A2).
Fires 5.56 x 45 mm NATO cartidges at a rate of 700–950 round/min fed from a 30-round detachable box
All BrickArms tiny toy weapons are made of solid ABS plastic, designed to be used with LEGO® toys. They cannot shoot bullets and cannot be made to fire bullets in any way.