This is Beretta's newest pistol, the PX 4 Storm. It's their entry into the world of polymer frames. It comes with 3 backstraps to adjust the grip size. It also features Beretta's Superluminova photoluminescent sights. The next step is to install the "stealth" decocker controls which reduce the profile and convert the PX 4 to a "G" model with a decocker only.