 As the cost of producing the Galil for all IDI forces was very expensive, Israel continued to purchase M16s and later M4s with military credit from the US, replacing many Galils then in service.In general, Israeli troops preferred the M16, because it was lighter and more accurate, if not quite as rugged and reliable.When the M4 came along this weapon with its short length and light weight became even more attractive, along with the M4's versatility in using different optics without losing zero when the weapon was disassembled, plus other rail-mounted accessories.