In 2009, the U.S. Marine Corps selected the Trijicon ACOG 3.5×35 as its Squad automatic-weapon Day Optic (SDO). The SDO will mount on the M249 light machinegun to assist gunners in target detection, recognition and identification. This model includes the Trijicon RMR, providing the operator with quick target acquisition at close quarter distances or when vehicular mounted.
ACOG 3.5×35 Scope, Dual Illuminated Red Horseshoe M249 Ballistic Reticle, 9.0 MOA RMR Sight and LaRue Tactical Mount
Dual Illuminated Red Horseshoe Dot Reticle for Close-in, Reflexive Fire
Anti-Reflection Device & Protective Flip Caps
Features dual illumination (Fiber optics in daylight; Tritium in darkness)
Forged Aluminum Housing Material