The Red Rooster Silencers are made from 304 Stainless Steel material and all the Red Rooster silencers are CE Marked and verified & Certified for European Markets, So all the European Markets like - Germany, Spain, Italy, France, Netherlands etc. can use these silencers without any hassle in their countries. NOTE- Please make sure to provide your full address with your CORRECT contact phone number or mobile number to avoid Shipment delay due to insufficient address. Even Few shipment companies doesn't accept the PO Box address. So please try to give your complete address with Telephone number. Leaving Negative or Neutral Feedback is not an easy solution of a problem,so please contact us if you have any questions or any complaints before leaving a Feedback, will assure you give a 100% solut.