I am looking for sources for empty chamber/bore indicators for both pistols and rifles that have a long rod or something that sticks out the end of the barrel. I need these for an LEO training environment. I need to be able to place the indicator in the chamber just like dropping a round in the empty chamber by hand and then be able to close the action. The idea is to have an empty weapon with the action closed but have a visual indicator sticking out the end of the barrel to indicate an empty weapon. The rod or "tail" sticking out the barrel would be trimmed to an appropriate length for different barrel lengths. Any ideas?