UTG 2.6" ITA Red/Green CQB Micro Dot with Integral QD Mount Micro Dot Sight Versatile Super-compact Body - a Mere 2.6 in Length; Shockproof, Fogproof and Rainproof Clear and Sharp Target Dot 4.0 MOA at 100 Yards; Instant Target Aiming (ITA) and Instant Lock On Target to Enhance Shooting Accuracy and Performance Red or Green Dot with Intensity Adjustment to Adapt to Any Environment; Ideal for a Wide Variety of Pistol, Shotgun and Rifle Applications Perfect Co-witness with A2 Standard Iron Sights Using a 1/2" Riser or 1/3 Co-witness with a 3/5" Riser Integral Mounting Base with Innovative Quick Detach Lever Lock for Rapid Deployment on Any Picatinny Rail