The M16 got its debut in the Vietnam war as a replacement for the M14 and has been the primary infantry rifle of the U.S. since. It is easily recognizable by its completely black body, top carrying handle, and stock which is aligned with the rifle barrel. The M16 family includes M16/A1/A2/A3/A4 variants of the rifle. The M4 is a shorter and lighter version of the M16A2 and has an adjustable "telescoping" stock to replace the fixed stock of the rifle it is based on. The airsoft world has embraced the M16 and it is easily the most popular style of airsoft rifle that we sell. Available in both spring and electric versions we have what you need! Our M16 and M4 style airsoft rifles come in many different variants and many are fully customizable to fit your exact needs. Check out our airsoft rifles by ICS, G&G, KWA, G&P, Echo 1, CYMA, Cybergun, King Arms, and JG below.