Here is a single stack which is a collaboration gun between Briley and Pistol Dynamics. The two smiths, who worked together long ago in South Africa before both coming the US [Claudio-Briley and Paul - Pistol Dynamics], put their heads together on this one and came up with some features for this gun.
It has a Briley frame, 30 LPI - front and back, weld on magwell, signature beavertail, signature hammer, spec'd slide cuts and profile - ion bonded & horizontally lined, spec'd bushing and plug, Briley barrel, signature front sight unit - which dovetails in from the muzzle, external extracto