My main sub back on R was /liberalgunowners, which was a space for Left-leaning folks to discuss firearms, training, community defense, and everything else vaguely firearms-adjacent, without having to worry about right-wing gun nuts stepping in (those mods were seriously saints). It also very actively eschewed the Tankie tendencies of the SocialistRA sub.
It is/was a very chill and friendly place for people to learn and share, and saw a lot of great interaction with other left-leaning firearm groups (LGC, NAAGA). It was especially nice to see it become a hub during the Trump years for LGBT+ folks who felt that they needed to learn to defend themselves, and had a lot of resources for connecting them with vetted trainers local to them (e.g. through Pink Pistols/Operation Blazing Sword).
As much as I’d enjoy seeing a community like that off of R, I’m not sure we have enough interested folks here to sustain it.