- The M4 RIS full metal rifle is with full trademarks and logo engraved on the metal receiver.

 - The integrated bolt catch / release system makes the hop up adjust easily accessible.

 - Rough surface of grip provides player control full rifle more stable.

 - 4 sides tactical rail allows the user customize the gun by attaching various devices.

 - Mosfet assembly provides better trigger contact.

 - Bolt-on carrying handle with adjustable rear sight.

 - Package comes with a 300 rounds magazine.

King Arms M4 RIS