ProTechGuns is a Polish company that manufactures chemicals for both airsoft and firearm enthusiasts. The company’s experience from both fields ensures that their products get the job done with a reasonable price. This handy small bottle wont take space from your pocket. Also virtually has no odour to to it. Product also bears NCAGE: 99S3H certificate Only for firearms and metal objects. Rubber parts and O-rings are damaged easily from gun oil.