I had one for years. Made a great squirrel gun! Eventually it started 'eating' co2 cartridge like no tomorrow so I switched from Daisy cartridges to Crosmans. It shot great for another year but started having the same problem of using up the co2 too quickly. I tried a good cleaning and oiling the seals and that helped for a while. I finally ended up making my own seals from an old bicycle tire tube and it shot as good as new. Hope this helps, it's a great little gun that will put some small meat on the table.