Brand New In Box, Semi-Auto Ruger Mark IV Tactical 22. Ruger number 40150. Pistol features a 4.4 Inch threaded cold hammer forged bull barrel(1/2X28), 1:16 twist rate, adjustable rear sight, checkered grips, One-piece precision CNC-machined grip frame, simple one button takedown, Ambidextrous safety, optics rail, TWO 10 round mags included, overall length of 8.5 inches and a Weight of 2.16 Pounds.