I have these caulking gun now for several weeks in use and am very happy with it. It is of stable and robust quality. The adhesive cartridges can be quite easy to squeeze without significant effort. There is almost no '' hunting '', that is, when I let go of the handle, does not senselessly even a greater amount of adhesive from the metering out how it cheaper style often is the case with caulking guns. Overall, our work very comfortable with this cartridge gun. I would buy them again at any time.