Abstract: Converging hardened steel plates are loosely mounted in a frame, with neoprene pads between them to better absorb the noise and impact from projectiles. The upstream end of the bullet trap is a target area, and a containment chamber communicates with the downstream ends of the plates defines a throat area. A transition area connects the chamber entry with the throat area. An impact plate between them has end portions fitted loosely in openings defined by the support frame. A plurality of vanes define the cylindrical chamber, and have loosely supported ends. These vanes have edges that abut and over-lap one another so movement of adjacent vanes will occur in response to one of these vanes being struck by a projectile. These vanes are normally restrained but can move radially outwardly when hit by a projectile. The number of vanes is less than 20 degrees in the chamber.

Abstract: The enclosure surrounds the shooter who fires his/her weapon from inside, adjacent the back wall, at a target and/or bullet trap located some distance away from the enclosure. Sole access to the enclosure, and the shooter's station therein, is through the open front end. Air circulation and filtration is supplemented by generating an air curtain across the open front end. Air venting and filtration of inside air is at a rate of 6 times per minute and provides a flow of clean air from back to front of the enclosure through a pressurized plenum in the back wall designed to create a uniform flow through the shooter's station. An auxiliary venting outlet in the top or ceiling of the enclosure provides a negative air pressure inside the enclosure so contaminated air escaping through the open front end is minimized.