The PG151 dispensing gun has a 2 in 1 handle that will dispense material from both 10.3 and 30-Ounce cartridges. * Tool comes with a 3 foot air hose and standard fitting to easily connect to a high-pressure regulator and air tank or compressor (purchase separately). * Unique twist lock bayonet barrel mount makes the insertion and removal of cartridges easy and convenient. * Common grip will handle all sealant, caulk and adhesives. * Weight 2 1/2lbs