<P> A powder - actuated tool ( often generically called a `` Hilti gun '' or a `` Ramset gun '' after their manufacturing companies ) is a type of nail gun used in construction and manufacturing to join materials to hard substrates such as steel and concrete . Known as direct fastening , this technology relies on a controlled explosion created by a small chemical propellant charge , similar to the process that discharges a firearm . </P>
<P> A powder - actuated tool ( often generically called a `` Hilti gun '' or a `` Ramset gun '' after their manufacturing companies ) is a type of nail gun used in construction and manufacturing to join materials to hard substrates such as steel and concrete . Known as direct fastening , this technology relies on a controlled explosion created by a small chemical propellant charge , similar to the process that discharges a firearm . </P>
powder actuated tools are similar in operation to which other device
powder actuated tools are similar in operation to which other device
firearm
firearm