At one point, Beretta planned to release this firearm as the RX4 (R for rifle), sharing a naming convention with other "Storm" products such as the Px4, Cx4, and Tx4.

The MR1 does not require tools for disassembly, and it has nine attachment points for slings to accommodate multiple carry options.

[2][better source needed] This weapon operates only in semi-automatic mode; no selective-fire or otherwise full-automatic version of the MR1 is planned.

The samples sold in the United States were assembled at the Beretta USA plant in Accokeek, Maryland with imported parts of Italian manufacture.

In other countries, the MR1 is available to civilians only with longer barrels due to local gun laws.