It basically is a gun though "this technology relies on a controlled explosion created by a small chemical propellant charge, similar to the process that disch

It basically is a gun though "this technology relies on a controlled explosion created by a small chemical propellant charge, similar to the process that discharges a firearm" https://en.m.wikipedia.org/wiki/Powder-actuated_tool https://en.m.wikipedia.org/wiki/Powder-actuated_tool