Silencer is designed for m4 Viper airsoft gun, and may work on other m4 airsoft guns, I had printed it in clear and then lightly send it to a smooth finish sprayed it with a flat black and then spray mist it silver and then misted it again with the black and then lightly sanded it in certain areas to give it that look. how I painted the silencer here https://www.youtube.com/watch?v=ZzYVwwSzW2MNeed me to print for you!! https://www.3dhubs.com/san-diego/hubs/ray