Attachment systems configured to fixedly hold a rail are described, including a first connector integrated with a tactical accessory mount, a base element, including a first engagement portion configured to at least partially wrap around a first edge of the rail, and a movable element configured to move relative to the base and including a second engagement portion configured to at least partially wrap around a second edge of the rail. A locking mechanism is provided to hold the movable element in a closed position with the second engagement portion holding the second edge of the rail and the first engagement portion holding the first edge of the rail. A second connector may be attached to the base element to hold the base element to the tactical accessory mount via the first connector.