The DSG OWB D4 Holsters were made to accommodate various attachment methods. This provides a person to have a holster that can be used for different carry styles instead of one holster for each type of carrying style a person might want. Some of the attachment options that will work with D4 Holster but not limited to are the Safariland Paddle, Safariland QLS, and Bladetech Tek-Lok.