The Swift Premier Pistol Scope is perfect for use in low light situations. The scopes feature USA made BaK7 Schott glass lenses that are fully multi-coated and provide up to 96% light transmission. The rifle scopes are designed to withstand the recoil of the heaviest magnum handguns and are water and fogproof for use in all weather conditions. Other features of the Swift Premier Pistol Scope include a locking ring eyepiece, 1/4 MOA finger-turn adjustments and an aircraft aluminum tube. Swift Premier Pistol Scopes are covered by the Swift Lifetime Warranty.