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Hi Jeff, yes sir, the rifle-length gas system features a 0.750" 4-position rotary-regulator gas block to achieve ideal function across the wide range of ammunition available in the marketplace today. The included, on-board 3/16" ball-end wrench makes for easy regulator adjustment. Stay safe & have a great day!

Hi Jeff and welcome. This will depend on when this rifle was manufactured. You would need the Serial Number to have Ruger determine if this has the new gas system. Current rifle gas system details on Ruger's website here : https://ruger.com/products/sfar/specSheets/5611.html