Compatible with all gel blaster with 0.8 inch (20 mm) rails With SRO Gen.2, the Trisicon engraving on the left and right side of the lens has been upgraded to the same 3D engraving. The welding marks on the top of the lens are also recreated, making it one of the top SRO replicas available Introducing the Gen.2 replica of Evolution Gear Trisicon Sight that is compact yet easy to aim with large lenses In the previous version, when the reticle reached the edges of the lens, it has been improved with the Gen.2 to show round reticle at any position of the lens. The luminous unit itself is also updated, and the reticle is bright enough for a replica of the open dot site Adopts a large 1.0 inch (25 mm) diameter lens, with a much wider field of view while being compact and difficult to lose sight of reticles. Recommended as a main primary optics and backup site for magnification scopes.