TacFire Official Product, 3-9x42 tactical compact size p4 sniper reticle rifle scope is constructed of one solid piece of T6 6061 aircraft grade aluminum body. It is fog proof with shock resistant housing, nitrogen purged and O-ring sealed. It also features a quick focus eyepiece, external open target turrets to adjust your windage & elevation, cut sunshade to help reduce glare, additional 1/2" riser to use with mount & tri-illuminated reticle with 3 adjustable rheostat brightness settings to select from. Green fused, multi-coated & scratch resistant lens for optimal light transfer & superior clarity. This scope is perfect for both close quarter battle and long range shooting. It also comes equipped with an integrated quick detach mount and BDC calibrated for a .223 with a 55 grain bullet.