I'm pretty liberal and fairly progressive, but I'm not 100% anti-gun, so your statement is certainly not broadly generalizable outside of conversations in the media, in my experience. I voted against a gun law just a few months ago, though it passed anyway. I wanted to vote for it, because the requirement that weapons be stored securely (either in a safe or with a trigger lock) was good, and the requirement for timely reporting of stolen firearms was good, but I couldn't vote for it because it also contained a ban on large magazines, which violates the fourth amendment by depriving people of property without due process—in other words, eminent domain all over again.
We do, IMO, need to mandate some changes, like gun safety classes for anyone purchasing a firearm for the first time, electronic fingerprint safeties on all new firearms, etc. And I wouldn't personally want to have a firearm in my house because I think the safety risk exceeds the safety benefit, at least in my neighborhood, but that doesn't mean I think that my opinion should be forced on everyone else. That's part of being a true liberal. Anyone who believes otherwise is a progressive authoritarian, not a progressive liberal.