Abstract: Various gun sights and related methods are provided. In one embodiment, a gun sight includes a light source adapted to project light, a user-viewable interface, and an optical element. The optical element includes a first surface adapted to pass the light to provide a reticle at the user-viewable interface. The optical element also includes a second surface adapted to refract the light to provide a light guide at a peripheral area of the user-viewable interface to aid a user to substantially align the user's eye with the reticle. Various mechanisms for aligning gun sights, attaching gun sights, related methods, and other embodiments are also provided.

Abstract: A portable light includes: a cylindrical housing having a longitudinal axis and receiving a bezel and a lamp for projecting a light radially away from the longitudinal axis; and a cradle assembly including a clamp for receiving the cylindrical housing, wherein the clamp includes a plurality of features for engaging selected ones of corresponding features on the cylindrical housing to secure the cylindrical housing at a selected rotational position about its longitudinal axis with regard to the cradle assembly.

Abstract: A live-fire simulation system uses a position sensitive detector (PSD) in a weapon-mounted sensor to intercept emitted light from target emitters spatially distributed about a target. Each target emitter is modulated with a unique frequency. The system can thus not only determine the points of interception on the PSD but also determine which emitter caused which interception by using a frequency analysis.