The Killer7 Syndicate's weapons are as follows:
Garcian Smith - P230 automatic pistol equipped with a suppressor.
Dan Smith - Gray-finished Colt Python .357 Magnum revolver with aftermarket or customized grips.
MASK de Smith - Two modified and customized M79 grenade launchers with barrels and stocks sawn down.
KAEDE Smith - A .45 caliber AMT Hardballer with attatched scope.
Con Smith - Two Glock 18s, law enforcement fully-automatic variants of semi-automatic 17s. Both are set in 9mm.
Coyote Smith - A top-break Enfield Mk. 2 revolver in, most likely, .38 Short. He also fires custom, high-power hand-loaded bullets, though that's not adviseable in older firearms used to lower pressures.
Kevin Smith - A seemingly endless supply of throwing knives and a large, long-bladed knife only used in close-quarters combat.