Type: Airsoft. Manufacturer: King Arms. Model: Colt M4A1 Metal AEG. Materials: Metal & Nylon. Weight: 6 pounds. Barrel: 15 inches, metal. Propulsion: AEG Action: Semi/full auto, single action. Ammunition Type: 6mm Plastic BB (recommended .20 gram plus). Ammunition Capacity: 300+ round magazine. FPS: 450. I was not fully sure if I would warm up to an AEG style of Airsoft rifle as I really enjoy the realism of a gas blowback type of replica gun. But the overall realism of the King Arms Colt M4A1 metal AEG really won me over and the added working components like the charging handle and forward assist along with the fully adjustable sights and 6 position stock just made it for me with this Airsoft Carbine. There is something to be said about an AR15 styled gun, they just look the part and this very realistic and usable M4 Airsoft replica is not just great to hold and look at but also performs very well which would make it deadly on the field! Now if only I could find some time to use it on the field ;) Read full article here: https://www.replicaairguns.com/2012/3/24/king-arms-colt-m4a1-metal-aeg-airsoft-rifle-table-top-review.html