The CW series are the value priced versions of the P series guns in 9mm, 40s&w and 45acp.
The CM series are the value priced versions of the PM series guns in 9mm and 40s&w, with 45acp coming soon.
So, a CW9 is essentially the same gun as the P9, and the CM9 is essentially the same gun as the PM9.
The differences being that the CW and CM guns have a conventional rifled barrel instead of a polygonal rifled barrel, stamped instead of roll marked engraving on the slide, less machining on the outside of the slide, a pinned plastic front sight instead of a metal sight in a dove tail, MIM instead of forged slide stop and one magazine instead of two sold with the gun. In addition, options such as black DLC finish and night sights are not offered on new CW and CM models.
Awesome, thanks for the information. Ill keep an eye out.