.40 S&W Caliber, 3 & 3/8 inch barrel, has Crimson Trace Laser added to rear of grip, white ouline rear and white dot front combat sights, used gun with no case or book. Magazine does not match! 15 round Glock 9mm magazine included. Gun is a .40 caliber and magazine is for a 9 mm! SN-PGH056.