Abstract: A sabot launching device attachable to the muzzle of a standard rifle for launching a non-lethal ring airfoil projectile at a desired velocity and for imparting a desired rate of spin to the projectile, the invention comprises a housing having rifle grooves formed proximous to an open distal end thereof for imparting spin to the projectile as said projectile is launched from the open end of the housing. A sabot member engages the projectile within the housing prior to launch and is projected forwardly within the housing while in engagement with the projectile under pressure produced by firing of a gas-producing round in the standard rifle. The forward movement of the sabot member is rapidly slowed by a buffer mechanism disposed within anterior portions of the housing after initial acceleration to cause only the projectiles to exit and thus be launched from the housing, the sabot member thereby remaining within the housing and being reusable.

Abstract: An inertial ring lock, in the form of a semi-circular ring washer, is used as a retainer for a threaded fastener in threaded engagement with a threaded aperture in a support element, the ring lock being snapped into a relief groove in the threaded fastener to loosely encircle the threaded fastener in position to loosely engage the support element when the threaded fastener is fully threaded therein.

Abstract: A high pressure vented toroidal shaped propellant chamber has an integrally ttached primer assembly which communicates therewith by a tubular spoke element. The vented propellant chamber is affixed to the rear end of a projectile. The propellant, when ignited, generates gases in the vented toroidal chamber providing the propulsion force needed to forcibly expel the projectile from a launcher. The caseless projectile attains a proper muzzle velocity without the use of a conventional cartridge case.