This full metal constructed AEG equipped with Rail Interface System (R.I.S) handguard. It is a standard 14.5 inch outer barrel carbine rifle which comes with 600M folding rear sight. An unique serial number and King Arms logo marking are laser engraved on the lower receiver of each rifle. A high performance 7mm bearing gearbox is used for this rifle. Package comes with 300 rounds high capacity magazine, battery case and vertical tac grip.

M4 RIS Advance