The Gatling Gun, weighing as much as piece of 19th century artillery, is clumsy and bulky, but it is a marvel of engineering. This week, we shoot Gatlings and show how they are made today by U.S. Armament Co. SIG Sauer makes the 522 rifle, which looks just like it’s 5.56 NATO big brother the 556, but the affordable 522 is chambered in .22 Long Rifle. The M1911 might be a century old, but Colt came up with the Officer’s ACP in the 1970s, a shorter, lighter, more concealable version of John Moses Browning’s classic design.