That's odd.... not saying I don't believe you; just that they look to be the same exact lower with the exeption of the mag well and longer grip handle . idk? SIG P365 SAS | SIG SAUER P365 SAS, Anti-Snag 9mm Pistol . What's awesome is that the 12rd mags for the XL work with the sas . I didn't like my first couple SIG's But these are changing everything.I held the SAS version, the mag release button is almost impossible to operate