SMG "SUBMACHINE GUNS" Linked Attribute: ^gQuickness^n The SMG skill allows you to use submachine guns. The are light, repeating ^Wfirearms^n, and do not include anything classified as a light, medium, or heavy machine gun. SMGs can accept one top, barrel, and under the barrel accessory (excluding grenade launchers). They cannot use silencers, but may use sound suppressers.