I just received 2 frames they appear to be 80% castings for a 1911 style pistol. The only markings are on the right side of the mag well. It is a circle cast into the frame AABERDEEN ARMORY this is wrapped around to large A's Logo I am quessing the frames are aluminum any Idea or knowledge of these? can they be mad into a shooter or are they just interesting paper weights? any help would be great thank you