Gun Cleaner & Degreaser. Over the years we have received requests for a cleaner that will get down into the action and other hard to reach areas that need cleaning. We have taken the Micro-Penetration Technology of the Blue Wonder™ Gun Cleaning Gel and produced a new product, Blue Wonder™ FAST BLAST, a powerful spray cleaner designed to penetrate deep into actions, trigger assemblies, receivers, etc and quickly remove powder residue.