Not bad!
I have used this stapler for about a year and so far so good. Its got plenty of power and hasn't jammed once. Of course it doesn't get used everyday on my jobs but it works when it does get used. I only have two gripes, one is the foam padding that wore off after two uses and second, the safty is hard to get used to because the gun has to be held perfectly to the material but its still a sound gun!