Dan Wesson M1911 ACP pistol

The Dan Wesson M1911 pistol is a series of model 1911 semi-automatic pistols.
Dan Wesson M1911 pistols are made at the Dan Wesson Firearms manufacturing facility in Norwich, New York. They are marketed and distributed by CZ-USA.
Model designations.
According to Dave Severns on 1911Forum.com, these are the common Dan Wesson model designations: