My absolutism can't go beyond the constitution. So as written within that context, I am a 2A absolutist. It doesn't give you a right to murder people with your right to keep and bear arms.
Let's say I have $150, and the gun I want is $150. I go to gun store and attempt the purchase the gun. The clerk tells me the price is $151, including tax. Shouldn't an absolutist think this is an infringement?