M4A1 Ext. improve power performance with insert ACOG sight on top .M4A1 Ext is a remodeled firearm with advantages of basic M4A1 and the equipment of Scope, an extension equipment that complements low accuracy compared to M16A2. When target firing using Scope, it shoots by 3 rounds with high accuracy.
Current Available Grade : B / A / S / SS
Utility Recommended :Versatileness ,Fast reload