Centrists are some of the easiest people in the world to manipulate, because their entire conception, despite your claim, is based on what they perceive to be the two "end points".
If we switch one side to "being required to own no less than 10 firearms by law", then "centrists" would be going "People should only be required to own 6 guns."
If the question were "Ban all knives" or "let people own knives", the centrist response would be "Allow butter knives, but only after extensive training and background checks. GOD SAVE THE QUEEN!"
Making exaggerated demands, and then asking for "compromise" is a common business practice, and is also how Americans are losing their right to bear arms.
>"BAN ALL GUNS!" "NO!" "Okay, let's compromise are just ban these types of guns."
five minutes later…
>"BAN ALL GUNS!" "NO!" "Okay, let's compromise are just ban these types of guns."
five minutes later…
>"BAN ALL GUNS!" "NO!" "Okay, let's compromise are just ban these types of guns."
five minutes later…
etc