The King Arms M4 CQB RAS Kit is the perfect way to convert your mid-length M4 airsoft gun into an intimidating CQB dominator. This kit comes with everything the user needs, minus an inner barrel, because it is designed to work with a mid-length 300mm barrel, which either allows the user to keep their current inner barrel, or to buy a new upgraded one of their choice. The kit includes a 6.25 inch RIS unit, which is constructed out of highly durable, lightweight CNC machined aluminum, and provides the player with plenty of rail space for accessories, as well as a shortened, 5 inch outer barrel and 7.5 inch barrel extension that is designed to fit inside the end of the RIS, giving it a sleek, continuous look. King Arms has also helped finish off the look of the RAS kit by including rail covers and a vertical grip with it, so the user is ready to play as soon as it is installed.
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