Shop the DEWALT PA3500 Tool (Powder-Actuated) - Tools, PA3500 Tool - .27 Caliber, low-velocity, semi-automatic, trigger-fired, power adjuster. The PA3500 Tool is a low-velocity, .27 caliber, semi-automatic, trigger-fired powder-actuated tool for attaching construction materials to concrete and steel, with a power adjuster allowing the operator to decrease load power by up to two levels. Powder-actuated tools may be used only by properly trained and licensed operators per ANSI Standard A10.3.
