A quick overview of the Golden Eagle M4 RIS CQB GBB rifle that is available at Dave's Custom Airsoft... "Designed to be a highly realistic rifle with a strong blowback system, the Golden Eagle M4 RIS CQB is an affordable airsoft rifle that is popular among airsofters.

The gun has an aluminium alloy outer barrel and receiver and 20mm RIS rail handguard system for the mounting of lights, lasers and grips. The upper receiver also features a rail for optics and can be used instead of or in conjunction with the removable rear sight. The stock and pistol grip are made of a tough and durable nylon-reinforced polymer, as is the magazine's outer shell. These magazines are PMAG styled and an update to the rifle, they are a bit more simple in design than the older metal STANAG type one that Golden Eagle used to include, making them a bit more reliable, and lighter; handy for carrying several for gameplay.

This GBBR is compatible with Western Arms magazines, G&P WOC, GHK magazines and any other GBB AR magazine designed for the WA system, although it will work best with Golden Eagle branded magazines. The Golden Eagle M4 CQB is a great choice for anyone wanting to dip their toes into the world of gas blowback rifles for the first time, as well as the more experienced player who’s looking for the ultimate realism."