Brand new, never fired caliber x-change kit for the P365. Converts a 9mm to .380. Simply remove the FCU from your P365 and place it into the grip module of the caliber x-change kit. Comes with 1 additional magazine (so 2 total) and comes with federal hydro-shock self defense .380 (20 rnds). Has night sights, and its optic ready. This kit was never fired. Just to ensure there is complete understanding, this kit does not come with an FCU and is therefore not a firearm. I can be reached at eight01-636-three210.