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Hi Juan and welcome. The Tisas 1911 Duty Raider has a RMSc Optics Footprint and is a Direct Mount for Holosun 507k & RMSc Footprint Optics. You would need an RMSC to RMR adapter plate to mount this RMR Optic. Cheers and stay safe!

This would not mount directly to the slide. This Tisas model utilizes an RMS-c footprint. To mount this optic you'd need an adapter plate.

Hi Juan, no sir, the Duty Raider has a RMSc foorptint. This red dot is for RMR. Stay safe & have a great day!