Bushnell BT71X37 Tac Optics Big D 1x 38mm 3 MOA Red Dot CR2032 Lithium Black

TAC Optics Red Dot Sights can be easily used with both eyes open, increasing the shooter's awareness of the surrounding environment and providing faster target acquisition due to the parallax free design, as the dot follows the movement of the user's eye while remaining fixed on the target. Engineered for greater speed and accuracy, these sights allow you to focus on the target rather than a reticle, thus increasing accuracy. The Big D red dot features a massive 37mm objective, which delivers bright images and an unrivaled field of view in the red dot market. It has a 3 MOA dot reticle with 6 brightness level settings and it is waterproof/shockproof/fogproof.