When your optic needs to be faster than your reactions, the Redfield Accelerator is not only up to the challenge, but anticipates it. The extremely rugged and lightweight aluminum housing provides nimble and precise handling, while the Mangin lens generates a wide field-of-view with superior image quality. Unlimited eye relief and copious amounts of elevation and windage travel make the Accelerator the perfect companion for virtually any firearm. Four illumination settings allow the Accelerator to be used in any lighting situation and an auto shut-off feature helps preserve battery life. Compatible with todays most popular Red Dot Sight mounts (sold separately), the mounting possibilities are practically endless. The Accelerator includes a cross-slot mount for Picatinny Weaver-style rails/mounts, mount adaptor plate, a CR2032 battery, and protective cover. From .22 handguns to .458 ARs, the agile Accelerator is always a step ahead. Covered by the Redfield Electronics Warranty.