This CNC-machined Volquartsen Superlight 10/22 receiver is a drop-in replacement for the factory 10/22 receiver. It comes complete with take-down action screw, V-locking block with retaining screws, recoil buffer, and trigger guard cross pins.Features the Universal Red Dot Mount providing multiple mounting locations for red dot optics. This allows the optic to mounted closer to the bore axis. IncludesPre-Installed Filler Screws on all Optic Mounting Holes Red Dot Footprints CompatibleBurris Fast FireC-More RTS 2C-More Slide RideJP Enterprises JPointLeupold DeltaPointShield Sights Mini SightSig Sauer Romeo 1 ProSig Sauer Romeo 3 MaxSig Sauer Romeo 3 XLTrijicon RMRVortex ViperVortex VenomVortex Razor