Cleaning kit Stilcrin for air guns, carbines caliber 4.5 mm. Manufacturer Stil Crin. Cleaning of all arms and especially sharp weapons, resp. firearms is very important. After each use it is necessary to thoroughly clean the weapon. In the barrel, impurities accumulate which with fumes and residua of the used ammunition cartridges clog the barrel bore, thus the weapon becomes unreliable, at extensive pollution even dangerous for its owner and also the surroundings.