There is no commonly available all-plastic pistol. Even Cody Wilson’s single-shot 3D-printed Liberator pistol had a metal barrel. It could be done, the world thought GLOCK had done it, but the ATF will have your balls for breakfast if you do it. Of course there’s a farrago of excellent so-called plastic pistols with polymer frames. But I heart metal handguns.
Carrying a metal gun requires a serious gun belt and the right holster. Why schlep a metal gun when polymer pistols relieve much of the weight burden (penalty?) and offer more than-than-merely adequate accuracy?
Are you down with plastic fantastic or hip to heavy metal?