A compact improved bug killing gun includes a compressed gas source fluidly connected to a chamber connected to a barrel. A compressed gas release mechanism is connected to the compressed gas source. A projectile storage magazine stores particulate projectiles and is located adjacent the chamber. A projectile loading mechanism moves the projectiles into the chamber from the magazine. A cocking mechanism is mechanically connected to the compressed gas source, the compressed gas release mechanism, and the projectile loading mechanism. When the gun is cocked, the projectile loading mechanism loads a quantity of the particulate projectiles into the chamber. When the compressed gas release mechanism is activated the projectiles are ejected from the chamber into the barrel and expelled from the gun. The gun optionally includes a laser sighting mechanism. The battery operated laser sighting mechanism is removably attached to the barrel or permanently attached with an integral, trigger operated switch. The projectile storage magazine comprises a cylindrical chamber, said cylindrical chamber having first side and second side projectile loading slots, said loading slots extending from an upper edge of said cylindrical chamber to a base of said cylindrical chamber, said chamber having a circular opening at a lower end； said lower end fitted sealably to an upper end of a vertical circular opening through said chamber； a rectangular projectile feeding tray, said feeding tray surrounding said cylindrical chamber and providing additional space for particulate projectiles outside of said cylindrical chamber.
