I have been unable to find a photo or two in any manuals that show this rack. It will store carbines (lock bar for carbines not shown) and a lock bar for M1icon rifles. Only M1 carbines and M1 rifles will fit. The drawing number would indicate WW2 ? and you could place one rack on top of the other as there are holes. It was used by a unit at some point in time.Attachment 102565Attachment 102564