Ruger American Rifle Ranch, 223 Rem/5.56 NATO, Capacity: 10, AR-Style Magazine, Matte Black Finish, Alloy Steel Material, Flat Dark Earth Synthetic Stock, 16.12" Barrel Length, 36" Overall Length, Weight: 6.1 lb, No Sights, 6 Grooves, 1:8" RH Twist, 13.75" Length Of Pull, 1/2"-28 Thread Pattern, Ruger Marksman Adjustable Trigger, Patent-Pending Power Bedding, Cold Hammer-Forged Threaded Barrel, Factory Installed One-Piece Aluminum Scope Rail.