Beretta’s venerable 92F handgun has factory light rail options like those found on the the excellent but discontinued Vertec line or the currently available M9A1. However, the vast majority of the Beretta 92s on the market lack a light rail and for those guns there is the new upcoming Recover Tactical BC2 Beretta 92F/M9 Grip and Rail.
The new BC2 works the same way as the original Recover Grips for the 1911. It is a slim, polymer unit that screws in place of the grip panels and extends forward around the trigger guard and under the dust cover to provide a light rail. The portion that is bolted to the grip is essentially the same width as the factory grip panels so there is very little additional bulk that the shooter will notice.
The BC2 should be available soon. Recover Tactical is already showing working units at IWA.
Check out Recover Tactical.