Trijicon ACOG Rifle Scope 4x 32mm LED Illuminated Red Crosshair 223 Remington Reticle with 3.25 MOA RCR Red Dot Sight and Colt Knob Thumbscrew Mount Matte Black

From MidwayUSA

The Trijicon Advanced Combat Optical Gunsights (ACOGs) are internally adjustable, compact telescopic sights with tritium and fiber optic dual-illuminated reticle patterns for use in low light or at night. Bindon Aiming Concept (BAC) models feature bright daytime reticles using fiber optics, which collect ambient light. The ACOGs combine traditional, precise distance marksmanship with close-in aiming speed. Designed for use with the AR-15 family, every feature of the mechanical and optical design was chosen for a single purpose: to provide increased hit potential in all lighting conditions, without failure-prone batteries.