Abstract: A clip and rail attachment system, for mounting an accessory. comprises at least one rail member having a longitudinal axis, a first end, a second end, a channel that extends substantially along the longitudinal axis, at least one end opening, and a longitudinal opening. The system also comprises at least one rail clip, having a channel engagement member and a mounting member. The rail clip is suitable for slidable movement along the rail member and for supporting the accessory on the mounting member. The channel communicates with the at least one opening and the longitudinal opening allows for the mounting member to extend out from the channel while clip is supported by the rail. The channel and the at least one opening are each of suitable size and dimension to receive the channel engagement member, so as to allow rail clip to be captured by the rail member and to slide therealong in a direction that is substantially parallel to the longitudinal axis.