walther pro gun care expert spray 100 mlWalther has created a professional weapon spray that cleans, protects against rust, keeps water out and keeps the weapon lubricated. It can be used from 50 degrees to + 210 degrees and has actually been tested on military weapons in police and military forces and can therefore be used in almost all situations. The long lasting film that comes on is not sticky and is not susceptible to dirt. The spray is produced in Germany for Walther.