Length - 780mm (Retracted) / 861mm (Extended)
Total weight - 3320g
Magazine capacity - 20/30/100
Bursts speed - 700-950 rd / min
Maximum range - 800 M
Early design of the M4 Model 720 is a single poinr shot, three points shot, then later Colt M4 improved the M4 to the fixed handles removable carrying handle and a M4A1. And removed after you put the receiver into the roof (Flat top), can be installed with any type night vision aiming devices. To ensure a damage even if the main aim remained the basic aim function, usually fitted with a manufactured after Knight's sight. The Knight's also M4A1 launched many products, the most famous must be the RIS (Rail Interface System), has now been RAS (Rail Adapter System) to replace.