a couple of notable improvements: a memory groove above the magazine release, a convex shaped manual slide lock (should be function as last shot hold open as well!), a recessed mag release button, more precise molding on frame (glass-filled nylon), excellent build quality, and a slightly smoother trigger. For these reasons I do slightly prefer the Ruger LCP over the Kel-Tec P3-AT (with more competitors on the way) since their cost is similar. But the LCP also shares several of the ...