Unfortunately this Gamo R-77 4 Inch Combat CO2 Revolver in .177 caliber pellet is no longer in production! I actually got my hands on two exact models. One is in working condition but has a few battle scars while the other one has never been shot because it is not presently working but it is in cosmetic perfect condition! I plan to mix and math them to get a perfect and working version. I have yet to really test this very realistic pellet revolver. Unlike most other CO2 pellet revolvers, the Gamo R-77 has a swing out cylinder.