Abstract: A unique, new and useful structure designed to simply and efficiently cover and protect the lens of a sight, especially a firearm sight such as the hooded models of the EO Tech Holosight type 511, 512, 551, and 552 models. A lens cover comprises a housing with a pair of lens openings, and a pair of lens covers, one for each lens opening. The housing has a recess for receiving the lens covers, and each lens cover is biased toward the recess and is moveable against its bias to a position in which it covers a respective lens opening in the housing. In a preferred embodiment, the recess and the lens covers are configured such that (i) the lens covers can be received and oriented in the recess in a predetermined relation with each other and (ii) the lens covers can be efficiently manipulated when they are not received in the recess in the predetermined relation to cause them to be reoriented and received in the recess in the predetermined relation.

Abstract: A new and useful structure and method are provided that enable a coupling device to be integrated with an auxiliary device and to be effectively operated to securely couple the auxiliary device to a male dovetail rail (e.g. the male dovetail rail of a firearm). In addition, the structure and method of the present invention are designed to provide a range of adjustment over which the coupling structure can be effectively operated. Thus, the coupling structure can take up a range of tolerance variations in the manufacture of the male dovetail rail.

Abstract: A new and useful structure that provides a simple and efficient lens cover for an optical sight, particularly a hooded optical sight. A lens cover structure comprises a lens cover frame, or a pair of lens cover frames, with lens covers designed to cover and uncover the lens openings in an optical sight, particularly a hooded optical sight. Each lens cover is biased toward a covering position in which it covers a respective lens opening in the hood, and is moveable against its bias to an uncovered position in which it uncovers a respective lens opening in the hood. According to a preferred embodiment, the lens covers are configured to be in predetermined orientations relative to the hood, when the lens covers are in their uncovered positions. In addition, a preferred embodiment is designed to enable the lens covers to be conveniently manipulated by the “off hand” (a shooters term describing the hand that is not responsible for fire control).