Bostitch manufactures the best heavy-duty hammer tacker/stapler money can buy. I guess you would consider it a specialized kind of staple gun. A Bostitch hammer tacker quickly drives in a few dozen staples in a few seconds to firmly hold in place roofing paper, plastic tarps, and other sheeting. It's also great for installing insulation bats between rafters or ceiling joists. The Stanley Bostitch Hammer Tacker has about twice the staple-holding capacity of a regular stapler, allowing you to work for a long time before reloading.