Metal rised carrying handle and iron sight. On top of the handle there is a 11mm rail, for attaching rifle optics or other accesories. Fits on a 11mm rail and therefore is compatible with for example Tippmann 98 (older models, PS and before), A5 and many other. In case of Tipmann A5 it is not possible to mount both the rail and a standard 200 balls-sized hopper. Length of upper rail: 8 cm, lenght of lower rail real estate needed: 9,2 cm. Elevates the rail about 3 cm.