Bond Arms Roughneck, Derringer, 357 Magnum/38 Special, 2.5 Barrel, Steel, Silver, Rubber Grips, Fixed Sights, 2 Rounds, With Trigger Guard BARN-357/38 The compact, yet rough-looking, Roughneck is a new type of Bond Arm gun. It's built with a 2.5" barrel chambered for 357 Magnum/38 Special, works best with smoothed lined holsters.