Elite Force 4 Inch Revolver (CO2) - Grey color. This all metal Elite Force made gas revolver is pretty great, for a revolver! We're quite impressed with its solid build quality for an airsoft revolver. Very reliable, hard shooting, and a lot of fun! Fully functional revolver, with rotating cylinders and all that. One BB loads into each shell, which is held in with its rubber ends. The box includes 12 shells total (gun uses 6 at a time). The CO2 cartridges loads through the bottom grip area with an included allen tool. We tested the velocity at 315-330 FPS w/.20g BB.