FX OPTICS 3-12x44 IR AO Rifle ScopeThe FX 3-12x44 scope, has an objective lens diameter of 44mm and a Diopter Adjustment Range: -2.0 / +2.0, The reticle inside the scope is illuminated RedParallax: 30 yds-infinityBody Tube Diamater: 25.4 mmTotal Length: 350 mmTotal Weight: 500 gLens Coating: Fully M..