With a grip width of only .9 the XD-S 3.3 is optimized for concealed carry. It shares several of the XD models features including its polymer frame fiber optic front sight and forged steel barrel and slide in a Melonite finish. This single stack semi-automatic pistol is distinguished by its pre-set trigger and disassembly fail-safe. The 45 ACP has a 51 capacity and weighs 21.5 ozs the 40 SW has a 61 capacity and weighs 22 ozs the 9mm has a 71 capacity and weighs 23 ozs. The XD-S 3.3 may be fitted with a Mid-Mag X-Tension magazine for increased capacity over its flush fitting one.DetailsCaliber 9mm - Recoil System Dual Spring w Full Length Guide Rod - Sights Fiber Optic Front Dovetail Rear (Steel) - Weight (with Empty Magazine) 23 ozs. - Height 4.4 w Compact Mag 5 w Mid-Mag X-Tension - Slide Forged Steel Melonite Finish - Barrel 3.3 Hammer Forged Steel Melonite 110 Twist - Length 6.3 - Grip Width .9 - Frame Black Polymer - Magazines 1 -7 Round Flush Fitting 1 -9 Round With Mid-Mag X-Tension Stainless Steel