Unity Tactical FUSION, Folding Sight, Fuison FootPrint, Anodized Finish, Flat Dark Earth FUS-S1F FUSION is a series of modular weapon mount components that provide users a configurable solution for placing accessories such as lights and lasers. FUSION provides opportunity for making micro adjustment to the placement of accessories" providing users one of the most customizable platforms for setting up a complete weapon system. FUSION attaches all components to the weapon at a single rail-grabber position" allowing for compact" repeatedly-familiar setups across a range of weapon platforms.