The Big Boy Steel Side Gate hangs its 20a ^2 or 16.5a ^2 round barrel and checkered walnut furniture on a matte-finished blued steel frame that's drilled & tapped for optional scope mounts, and uses the same adjustable Western-style sights as the standard Big Boy, with the same sliding transfer bar "safety" system in its hammer. Most of the weight savings is due to the steel frame being lighter than a brass counterpart to begin with, and less steel in the thinner barrel walls than an octagon version. To make sure the steel Big Boy stays easy on the shoulder in any of its three calibers, the .357 Magnum/.38 Special, .44 Magnum/.44 Special, and .45 Colt; we use a Mfg: Henry Repeating Arms