just got this but deciddd to go another route. Its brand new and has never had a FCU installed. There are only 700-800 made by sog and they will never be made again.

Kit comes with optic and brace.

The MP320 CALX kit is compatible with any non-manual safety P320 FCU and slide assembly and includes a polymer lower, a specialized brace, an alloy upper assembly, a 30rd magazine, and a ROMEO5X red dot optic.