The P226 Full Size features a XSeries slide equipped with ROMEO-X SIG-LOTM Pro Optic that mounts from underneath the pistol slide, utilizing the SIG-LOCTM Mounting System, the side battery allows a low deck height and a standard height Iron sight Co-Witness; AX2 adjustable DA/SA trigger; Bull barrel with target crown; XRAY3 Day/Night front and rear sights; low profile decocker. Includes three steel magazines.