Yeah you nailed it, leftists use the term “liberal” in its classic context, as you have described. Tankies tend to use it as a pejorative while other leftists usually use it descriptively, and are more likely to use “neoliberal” pejoratively instead. This does depend on which community you’re browsing though.

From a leftist perspective, it’s equivalent to stating that the only way to end gun violence is more guns

Just want to note that Marx said the working class must be armed, and there are many leftists who agree. Gun control is not a left position, it is an authoritarian one. Important distinction imo.