The ICS M4 S System is a great M4 that will not let you down. This gun is very solidly built and features ICS's unique split gearbox design. The split gearbox makes maintenance much easier. The gun shoots at 330 FPS out of the box and this can easily be increased by adding a more powerful spring. This model has an adjustable crane stock and can fit a 9.6v battery which give the gun an increased rate of fire. The front rail system has two top, bottom and two side rails giving you plenty of options for accessories and optics. The top rail runs along the entire body of the gun. Both front and rear sights can be flipped up or down making it easy to add optics or simply use the iron sights when necessary. Metal parts of this gun include the barrel, gearbox, gears and RIS. The body of the gun is made of durable nylon fiber composite plastic.

Features:

* Full metal gearbox and gears
* Split gearbox design
* Metal RIS
* 330 FPS with 0.20g BBs
* Adjustable crane stock
* Very High Quality