"CST" Holster (Cross Draw / Strong Side / Tanker) Revolver Holster Auto Holster click to enlarge photos CST is a convertible field holster for large revolvers and autos. It converts from a stong side holster or cross draw holster to a tanker in seconds. The harness is easily adjustable to compensate for garment changes. Available with convertible ammo carriers and an expandable chest strap for confort during movement. Pricing $240 Options Ammo Carrier: $45