Question: are ruger ar 15 mil spec?
Answer: The front sight/gas block on the Ruger AR-556 might look a little different to AR-15 fans. It is not a mil-spec forging but rather a refined design that's machined in-house at Ruger. ... But remember Ruger makes the entire gun in-house. In fact, the rear sight is Ruger's Rapid Deploy rear sight.