Check the listing for details. Alamo Four Star DLOC 30mm mount. Condition: Used. Listed at 175.00 USD. Alamo Four Star DLOC 30mm Scope Mount in good condition. This is a high quality quick-detach mount designed for scopes with a 30mm tube. Built by Alamo Four Star, it provides a very solid and repeatable mounting platform while allowing fast removal and re-attachment of your optic. The mount is about 10 years old but still works perfectly and locks up tight. It has been reliable and holds zero well. Great option for AR style rifles or anyone looking for a durable quick-detach mount for a 30mm scope.Alamo Four Star DLOC 30mm Scope Mount in good condition. This is a high quality quick-detach mount designed for scopes with a 30mm tube. Built by Alamo Four Star, it provides a very solid and repeatable mounting platform while allowing fast removal and re-attachment of your optic. The mount is about 10 years old but still works perfectly and locks up tight. It has been reliable and holds zero well. Great option for AR style rifles or anyone looking for a durable quick-detach mount for a 30mm scope.