This is not true.
A right (i.e. II Amendment) is absolute only in the responsible practice of it. Commit a crime and go to prison. When you get out, tell me if you have that right anymore.
Rights are not absolute in the sense that they cannot be revoked or forfeited. They can. Privileges are not comparable.
The government should not be in the business of revoking rights unless the person(s) whose rights are forfeited did something that caused the forfeiture.
"We hold these Truths to be self evident, that all Men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty, and the Pursuit of Happiness - That to secure these Rights, Governments are instituted among Men, deriving their just powers from the consent of the Governed..."
-- Thomas Jefferson, The Declaration of Independence, July 4, 1776
Do you disagree with Tom, or are you just splitting semantic hairs?
Regards
J.R.