Trijicon ACOG (Advanced Combat Optical Gunsight) 1.5x24 scopes are compact riflescopes that come with fixed power and notable illuminated reticle that makes it an optical device that can be used universally, right from no or low light conditions to bright light. Trijicon ACOG 1.5x24 scope is well known for its reliability as well as durability. USP of this optical device is its capability to combine CQB speed with precise distance marksmanship feature. This riflescope is designed to enable the scope to hit every time in any lighting condition.4 types of Trijicon TA45 Compact ACOG 1.5 x 24 scopes are available at Scopelist and they are:Trijicon ACOG 1.5x24 Amber Crosshair TA45-4Trijicon ACOG 1.5x24 Red Crosshair TA45R-4Trijicon ACOG 1.5x24 Amber Crosshair TA45-2Trijicon ACOG 1.5x24 Red Triangle TA45R-2 All the scopes come with BAC Gun-Sight, M16 Base, and Tritium Illuminated reticle.SpecificationsTrijicon ACOG 1.5x24 TA45MagnificationFixed - 1.5xObjective Size24mmLength5.76 inchesWeight5.92 ozReticle IlluminationYesSource of IlluminationTritium or Fiber OpticsReticle Color at Day TimeRed or AmberReticle Color at Night TimeRed or AmberPresence of BAC (Bindon Aiming Concept)Yes (Enabling shooters to shoot with both eyes open)Eye Relief3.60 inchExit Pupil16mmField of View25.60 ft @ 100 yardsAdjustment at 100 yards3 clicks per inchCombat ProvenYes (Capable to withstand recoil range .22LR-.50LR and passes drop test requirements of U.S. Military easily)HousingIndestructible sighting system ensured by Forged 7075-T6 aircraft aluminum alloy housingLensMulti-coated superior quality lens that provides superior light gathering features with no distortion at all, and extremely good clarityWaterproofing and FoggingScopes are filled with dry-nitrogen, thereby giving 5-times more waterproofing capabilities over standard military equipmentsBullet Drop CompensatorNo Features:Indestructible sighting system due to forged 7075-T6 aircraft aluminum alloy housingCombat proven riflescope and much more rugged than scopes with general designCapable of withstanding recoil within the .22LR-.50LR rangeMulti Coated lens that ensures excellent clarity of lens5-times more waterproofing capabilities than any standard military equipmentComplete waterproofing up to 100 ftAutomatic reticle contrast and automatic adjustable level of brightness is ensured by Trijicon Fiber OpticsLonger eye reliefNo use of battery because of Tritium or Fiber Optics illuminationCan be used for multiple purposes and is most suited for short distance huntingTarget acquisition can be done easily in any light condition (right from no/low light to bright)Presence of Bindon Aiming Concept that enables shooters and hunters to use the optical device with both eyes open in no/low light to bright light conditionsTrijicon ACOG Scope Reticles