 However, at 35 ounces with a 4.5" barrel, the firearm, with its 10+1 capacity, is the same size as the Colt M1911A1 .45ACP with its 35 oz.weight and 7+1 capacity, which many consider to be concealable, while the 40SW is 0.75 inches shorter in length and only 0.1 inches wider.The larger slide also helps to make blowback operation possible.