Experience the ultimate convenience withthe P365 XMacro Base Plate designed for effortless installation on all SIG SAUER 17-round magazines. The design allows you to upgrade your firearm with new magazine plates swiftly and efficiently ensuring you can spend more time in action and less time on setup. The floor plate adds weight which allows for easier and quicker reloads for operators. It also adds surface area that is useful in firearm malfunctions/double feeds jams etc.