Sig Sauer P211 GTO, Semi-automatic, Single Action Only, Metal Frame Pistol, Full Size, 9MM, 4.4 Barrel, MACH3D Compensator, Nitron Finish, Blackout, SIG-LOC PRO Optics Ready Slide, X-RAY3 Day/Night Sights, G10 Grips, Manual Safety, 10 Rounds, 3 Steel Magazines, Includes Romeo-X SIG-LOC PRO Red Dot Optic 211F-9-GTO-B-RXSL-10 Building upon a legacy of innovation and a heritage of crafting some of the world's finest hammer-fired pistols, the SIG SAUER P211-GTO gives the timeless features and performance-driven design of double-stack 1911 pistols a modern twist.