UTG Gen III Integral Blank Firing Adaptor for AR/M16 Carbine 3rd Gen Blank Firing Adaptor for Carbine Length AR-15;Fits Standard A2 Flash Hider and Barrel Made from High Strength Steel Alloy with Precision Manufacturing; Robust User-friendly Ring for Handy Carrying and Operation Durable Yellow Paint for Long-Term Protection and Distinction New Gen Upgrade with Superior, More Robust and Heavy-duty Center Hex Nut to Provide Mil-standard Performance Field & Torture Tested- Meet Most Demanding Requirements & Deliver Best Performance