The TAC-4.5 rifle is a light weight, CO2 powered Airgun rifle with an ergonomic pistol grip that holds the 4.5mm BB's in a stick type magazine allowing a fast reload. The rifles feature a full-length picatinny styled top rail for optics and accessories. The lower part of the rifle has a long rail for attaching the included fully adjustable folding bipod, and can be used for other equipment like tactical lights. Using CO2 means more power and a high fire rate, making this an exciting and fun gun to shoot. Uses 4.5mm round steel BB's