NEWLY DESIGNED, LONGER SLIDE Longer slide adds 1 inch of length when compared to the GX4-increasing muzzle velocity and sight radius, making it easier to maintain accuracy. T.O.R.O. (TAURUS OPTIC READY OPTION) SLIDE Direct thread, no plate system accommodates today's most popular red dot optics including: Shield RMSc Holosun HS507K X2 Sightmark Mini Shot A-Spec M3 Trijicon RMR cc Red Dot (with adapter plate P/N: 10028170) DLC-COATED STAINLESS STEEL BARREL Ensures reduced friction and greater wear and corrosion resistance no matter the elements-enhancing accuracy and overall performance. TWO BACKSTRAP OPTIONS Mfg: Taurus