Pneumatic gun for application and extrusion of sealant products such as silicone, putty, polyurethanes, glue, etc., packaged in 300 and 400 ml (10-13.5 fl oz) 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.