I voted bottom feeder, double stack...but that's generally true once I leave the walking area in and around home. For around home, property, and environs it's more often the case that I'm accompanied by a five shot 642-1 than the semi-auto.

Once I set foot in the 4Runner to head to or out of town, however, then I always carry one or another double stack bottom feeder and a spare mag.

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642-1, M&P15 TS