Abstract: Devices increase an arrow's kinetic energy, and hence the force on target impact, without a substantial decrease in the velocity of the arrow as compared to the same arrow without such devices. In especially preferred forms, the impact-enhancing devices are insertable into an arrow shaft and include an impact-enhancer weight which is freely moveable within the arrow shaft. The impact-enhancer weight will thus be propelled in response to rapid deceleration of the arrow (i.e., caused by the arrow head striking a target area). The relatively high velocity movement of the impact-enhancer weight will create a secondary kinetic energy effect which drives the arrow head further into the target area. That is, the impact-enhancer weight will be propelled forwardly at a sufficiently high velocity and strike a rearward region adjacent the arrow head thereby generating a secondary impact force (i.e.

Abstract: Day and night weapon sights have a sight element which includes a rod-shaped light guide, and a self-luminescent capsule integrally co-located within an end of the light guide. Preferably, the light guide is formed of a rod-shaped fluorescently dyed transparent plastics material and the self-luminescent capsule includes a radioactive luminescent source (e.g., tritium).

Abstract: A day and night weapon sight includes a mounting base, a rod-shaped light guide fixed to the mounting base, and a self-luminescent capsule fixed to said mounting base vertically adjacent the light guide. Preferably, the light guide is formed of a rod-shaped fluorescently dyed transparent plastics material and the self-luminescent capsule includes a radioactive luminescent source (e.g., tritium).

Abstract: Gun sights have a general cross-sectionally semi-circular support member provided with a lengthwise extending arcuate concavity; and a rod-shaped light guide positioned within and fixed to the arcuate concavity of the support member. The semi-circular support member may itself be provided with a generally rectangularly shaped lower channel which is especially adapted to being attached to a gun's vent rib. The semi-circular support member may alternatively be provided as a domed protuberance from a longitudinally split cylindrical band which is adapted to being sleeved over a gun's barrel. One or more of the rod-shaped light guides may be affixed within individual lengthwise concavities, in which case there is most preferably provided a central lengthwise extending concavity therebetween.