Upgrade your Sig Sauer P320, P226, or P211 R2 slide with the Springer Precision Filler Plate, engineered specifically for mounting Trijicon RMR or SRO optics on Romeo 1 Pro and R2 cuts that feature RMR mounting holes. This precision accessory eliminates the front gap common in factory optic cuts, delivering a rock-solid foundation for your red dot sight. Key Features One-piece aluminum construction for exceptional strength and lightweight performance at just 0.56 ounces Integrated recoil studs that lock into the optic base, distributing recoil forces and maintaining zero through thousands of rounds Precise gap-filling design that ensures flush, secure contact between the slide and optic Complete hardware kit including new screws, hex wrench, and thread locker for professional installation Optimized for RMR footprint optics on compatible R2/Pro Cut slides