Winchester Model 11 BB Airgun

[Lowell G Butts]

Hi, new here, joined to see if anyone can assist me in a problem with my Model 11, the injection pin into the CO2 cylinder has dropped down and not releasing. I emptied 4 cylinders before I discovered the issue. Can anyone on the site assist me in rectifying this issue. I know very little about airguns, or guns in general so I am at a loss to even know where to start to correct this issue or even if this is a fixable item. Please help. Thanks in advance. I await and appreciate any and all assistance available.