A friend found this small tool in a box of old gun stuff. Anyone know what it is? Looks like a small tool of some sort. About 2 1/2" long, 1/2" wide with a small round rod sticking out an additional 1/2". The bottom wide end is slotted. Has USA stamped near the top hole. Not sure I can figure out how to attach a couple pictures I took. Using my Android tablet, see no paper clip icon. Can't figure out the " from computer/ URL" on attaching photo. . If anyone knows what this is, thank you. gumbo333.