Trijicon ACOG 3.5x35 Scope with Red Chevron BAC Reticle TA11E Rifle Scope includes Trijicon Flat Top Adapter TA51. The ranging reticle of the Trijicon Rifle Scope is calibrated for 7.62mm (.308 cal) flat-top rifles to 800 meters. The chevron reticle is designed to be zeroed using the tip at 100 meters. The width of the chevron at the base is 5.53 MOA which is 19" at 300 meters. This allows range estimation for silhouette targets. Trijicon TA11E 3.5 x 35mm ACOG Advanced Combat Optical Gunsights hit fast in any light. Trijicon ACOG 3.5 x 35 Rifle Scope is internally-adjustable, compact telescopic sights with tritium 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. Trijicon 3.5x35 ACOGs combine traditional, precise distance marksmanship with close-in aiming speed. Although Trijicon ACOG 3.5 x 35 Rifle Scope has many features which are very advantageous for military use, they were developed by Trijicon without government funding. Designed for use with the M16 family, every feature of its mechanical and optical design was chosen for a single purpose: to provide increased hit potential in all lighting conditions - without failure-prone batteries. Specifications for Trijicon ACOG 3.5x35 Illuminated Scope Red Chevron Reticle: Manufacturer: Trijicon Objective Lens Diameter: 35 mm Magnification: 3.5 x Reticle: Illuminated Red TA11EA Chevron Exit Pupil: 10 mm Illumination Color: Red Field of View, Linear: 28.9 ft at 100 yds Eye Relief: 2.4 in Color: Black Weight: 14 oz Adjustment Click Value: 1/4 MOA Length: 8 in Adjustment Type: MOA Illumination Type: Fiber Optics/Tritium Shockproof: Yes Fogproof: Yes Package Type: Polymer Hard Case Magnification Type: Fixed Condition: New Country of Origin: USA Attachment Type: TA51 Features of Trijicon ACOG 3.5x35 Illuminated Scope Red Chevron Reticle: Always On, Always Ready: Most ACOG models are battery-free, featuring a tritium/fiber optic illuminated reticle that automatically adjusts the brightness based on available light. Take Control: Several ACOG models are designed with a user-adjustable brightness setting powered by a single AA battery. The 3.5x35 LED and 4x32 LED models both offer six adjustable brightness settings. Rugged, Reliable Housing Design: Fixed-power design allows for minimal moving parts to create a nearly indestructible sighting system. "Both Eyes Open" Design: "Both eyes open" shooting using Trijicon's Bindon Aiming Concept (BAC) feature allows for improved situational awareness. Outstanding Clarity: The quality of the glass and multi-coated lenses maximize light-gathering capabilities and clear field of view with zero distortion. Exact Target Distances & Holds: Most ACOG models feature a bullet drop compensating and target-ranging reticle for decisive aiming. Combat Proven: No other magnified optic has been used more in combat than the ACOG. Shock-Resistant: Proven to withstand recoil from a .22LR to a .50BMG and everything in between. Easily passes U.S. Military drop test requirements. Waterproof: Exceptional waterproof performance that exceeds military standards. Dry nitrogen-filled to eliminate fogging. This optic is tested to withstand and perform in extreme cold and heat with dry-nitrogen filled housing that mitigates fogging. Package Contents: Trijicon ACOG 3.5x35 Illuminated Scope Red Chevron Reticle Thumbscrew Flattop Adapter (TA51) 3.5x35 Scopecoat (TA63) LENSPEN (TA56) Lanyard Assembly for Adjuster Caps (TA71E) Trijicon Logo Sticker (PR15) ACOG BAC Manual Warranty Card