Heavy duty American-made shut-off gun with rear load design. An ergonomic handle and trigger design that allow the user to operate the gun in an easy manner. With the unique orientation of the discharge tube, the gun allows the user to work for long periods of time. The safety lock prevents accidental opening of the valve. Designed with a stainless steel control bolt, stainless steel cam, stainless steel seat and stainless steel ball, the gun features machined brass inlet fitting, and plated steel inlet and discharge tube. With a 4:1 burst ratio and six month warranty, this shut-off gun features the most durable design (in its class) in its industry.