Bright orange chamber blocker fits in the ejection port and physically prevents chambering of a round to provide positive visual confirmation that the firearm is unloaded. Removes instantly by pulling the large, easy-to-grasp ring to clear the chamber and bring the weapon into operation. Use in any situation that requires fast, visual verification of firearm status—law enforcement, military, gun shops, as well as hunting, range, and competition applications. Fits semi- and full-auto rifles and carbines with an extractor enclosed within the bolt, including AR-15/M16/M4 and M14/M1A. Flexible, one-piece, molded polymer construction stands up to years of insertion and removal cycles. Tab on pull ring allows marking with individual weapon identification information. SPECS: Molded polymer, orange. Fits AR-15/M16, M14/M1A, and other semi- and full-auto rifles and carbines with extractor enclosed within the bolt. Should not be used on any firearm with an extractor that extends forward from the bolt.