Designed in the 1960s by Paris Theodore and produced through the 1970s, the ASP package took a Model 39 and performed a radical "remanufacturing". Reduced in multiple dimensions, rounded edges, and a reshaped trigger guard. The original sights are replaced with a one-piece Guttersnipe sight. The grips are translucent Lexan, with the "PATENTED" marking and magazine is shortened and has windows for round counting.