TRAP/SKEET BARREL SACK PL GRY 36INTrap/Skeet Barrel Sack 36" - PL Grey - Silicone Treated - Protects firearms & other valuable gear against rust, dirt and scratches. The cotton's natural wicking ability continually draws moisture off the weapon making them ideal for year roability continually draws moisture off the weapon making them ideal for year round storage.und storage.