Love mine, use it for very close ratting. It does jam quite a bit- I only shoot two mags, and then replace the CO2 cartridge. It's fairly accurate and I can get 400 fps from wadcutters for verminwork.
I'm using it like an action pistol on the rats- they run hither and yon and I blast them as fast as I can. Very fun.
I am in my second magazine/CO2 holder: the first one, the seals are shot. Getting a new one was painless.