Burris FourX 2.5-10×50 reticle 4. This optic is part of the new Burris 2020 line. Compared to the line already in the catalog, the Four XE boasts greater light transmission, a wider field of view, a reduced tunnel effect, improved mechanical performance and a lighting control system. more efficient lattice. The Four line retains the zoom ratio of 1: 4x, illuminated reticle, low profile turrets, dual tension spring system to withstand the recoil of the most energetic calibers and maintain perfect zeroing, surface treatment of Hi-Lume Storm Coat lenses .