The XD pistol from Springfield Armory sets the standard for polymer pistols. The XD has everything you want and need in a pistol superior ergonomics reliable performance and features that make it easy and intuitive to use. The XD 4 Full-Size is the original XD offering from Springfield Armory and the most basic XD. This is the XD that started it all. – Caliber: 9mm – Recoil System: Dual Spring w/ Full Length Guide Rod – Sights: Dovetail Front and Rear (Steel) 3-Dot – Weight (with Empty Magazine): 28 ozs. – Height: 5.5 – Slide: Forged Stainless Steel – Barrel: 4 Hammer Forged Steel Melonite® / 1:10 Twist – Length: 7.3 – Grip Width: 1.20 – Frame: Black Polymer – Magazines: 2-10 Round Stainless Steel