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Yes- "Based on the X-Series platform, this gun is SIG SAUER's answer to further developing and improving the already phenomenal 320 series modular pistol. This pistol is Sig's response to creating a compact size pistol based off the X Five platform. The Professional X-Compact model contains a 3.6″ barrel with X-Ray 3 Enhanced day/night sights, optics ready while maintaining the fixed rear sights, no lightening cuts, X-Series modular grip, three 15 round magazines, and slide cover for use without optics. A cleaner, crisper, short trigger reset, safe takedown and unprecedented modularity deliver elite performance for all. Awarded the 2016 American Rifleman Golden Bullseye Handgun of the Year Award. "

X-Series Sig slide has been cut at the factory by Sig Sauer to be compatible with Romeo1Pro and Deltapoint Pro optics

John, DeltaPoint Pro Optics & Romeo 1 Pro Optics. --- https://www.sigsauer.com/romeo1pro-1x30-mm.html ----------- https://www.leupold.com/shop/red-dots/series/deltapoint-pro

Romeo1 Pro and Deltapoint red dots, but you can buy plates to fit others.