Pneumatic gun for application and extrusion of sealant products such as silicone, putty, polyurethanes, glue, etc., packaged in 300, 400 and 600 ml soft packs. Aluminum construction with solvent resistant nylon handgrip. Handgrip is positioned in the middle of the holding tube for easy balancing in one hand. Aluminum closing ring for durability. A rapid relief valve avoids dripping of product after user releases the trigger. Air flow regulator included.