The game that liberals and conservatives play

Here are two definitions that never stood well with me.
conservative – disposed to preserve existing conditions, institutions, etc., or to restore traditional ones, and to limit change.
liberal – open-minded or tolerant, esp. free of or not bound by traditional or conventional ideas, values, etc.

Here’s my beef. Conservatives basically want their way to not be changed. The rock. The unmovable. There is obviously one way, and that’s the best way regardless of any new methodology. Liberals on the other hand want change. This way and that way, like water. While choice of path is everything, apparently there is no actual set thought.
So if this is the case, then why is it that when it comes around to guns, they flip sides? Suddenly conservatives want the right to bear arms, the choice. Liberals however push for a no gun equates to greatness type law. Basically, you get a sort of conservative liberal versus liberal conservative. Personally? It never made any sense to me.
I mean, these are the same people that hold down party lines and must have things a certain way. Guess on some issues, you can pick and choose if you want to be left or right even though the party stands for either left or right. It’s definitely crazy stuff.
Of course, I’ll never understand politics since it seems to just sway towards whomever will benefit the most instead of what would be morally or ethically correct. Go figure that one out.