ďA homemade conventional type self-loading pistol need not be complex in design or demanding in tools needed for itís construction. Here is a bare-bones pistol design which is constructed from sheet steel and bar stock, the only power tools used to make it being a drill, angle grinder and a welder. The prototype pictured was built as a blank firing only dummy model for the purposes of demonstration, though the design itself would translate perfectly well to .25 ACP and other small cartridges.Ē
http://www.thefirearmblog.com/blog/2...d-sheet-metal/

Downloadable pdf here: http://www.mediafire.com/view/8ddbm8v1fxb3899