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Hi Steve, yes sir, the barrel this threaded 1/2 x 28 with an A2 Flash Hider. Complete specs can be found here >>> https://diamondbackfirearms.com/portfolio/db1717k042/ Stay safe & have a great day!

Hi Steve and welcome. Yes it is threaded. This model has a 16" 4150 CrMov Barrel with a 1:8 Twist Rate, Black Nitride Finish, A2 Flash Hider, Threaded 1/2x28 tpi and Carbine Length Gas System. Cheers, stay safe and enjoy!

Yes, it is threaded 1/2 x 28 with an A2 Flash Hider.