The M1A2 SEP FLIR optics are 3x,6x,13x,25x and 50x. The FLIR reticle has a green digital stadia aiming reticle that can be adjusted from green to black. The daysight optic is 3x-10x. The daysight optic has the red stadia aiming reticle that can be adjusted from bright red to no reticle in your sight. The FLEX 50 does use the iron sights but now they are equipped with the CROWS 2 system which the VIM (Visual Imaging Module) optics are (degrees) 1.7, 3.3, 5, 10, 25 and 47. The TIM (Thermal Imaging Module) is (degrees) 1.7, 3.3, 5 and 10.