[4] The Nano was designed with a removable serial-numbered chassis separate from the frame, an unusual feature notably also found in the SIG Sauer P250-series pistols.

This allows the owner to customize their grips with multi-colored frames without replacing the component that legally constitutes a firearm.

The absence of these protruding controls reduces the likelihood of the weapon snagging on clothing during an occasion where a quick and clean draw is required.

voiced concern about an intermittent failure to eject (FTE) while using lower quality ammunition with 115 grain bullets.

Most Nano owners agree that the pistol functions best on ammunition with bullets of 124 grains or heavier, and this opinion is seconded by many representatives of Beretta USA.