Model 250-A Sealant Gun Cleaned with PolyGone™ 300-AG

The bottom half of the sealant gun was soaked in PolyGone 300-AG polysulfide stripper.  Not only did it remove the polysulfide on the exterior, it also removed the buildup of polysulfide on both the inside of the retainer improving the clearance for the sealant cartridges and the trigger mechanism.  This inside build up and lack of trigger control are main reasons otherwise good sealant guns are disposed of.