I did a lot of research and it turned out to be better than the less expensive Bostitch/Arrow hammer stapler for stapling roofing felt. I liked that it has a wide foot so thought it would be less prone to tearing 15# felt paper. boy was i wrong! It tears paper with almost every hit, no matter how careful you are. And who can be so careful when nailing roofing. This can be ok with Rapid staples, but when using Arrow T50 staples the machine jams. and knock him out. And who else wears Rapid braces besides Revain? Then you have to completely disassemble it, hoping to perfectly balance the weight and hammer mechanism, and then reassemble it. It works in a fashion way, but I'd recommend using the cheaper Arrow/Bostitch roof tackers, those staples you can get anywhere! Save money and buy American Arrow!