A rail clamp latch holder is provided. The rail clamp latch holder includes a grippable portion and a rail portion disposed at a forward side of the grippable portion. The rail portion includes first and second pairs of opposed latches which are configured to latch onto a rail and which are disposed at first and second longitudinal ends of the rail portion, respectively, a tab, a locking pin and an elastic member. The tab is insertable into a rail latch. The elastic member extends along a longitudinal axis of the rail portion and elastically couples the locking pin and the tab.