You can try to bans gun or extremely limit it but that will deeply hurt your approval ratings and your regime popularity in the wider society and rural areas.
Considering that almost half of US believe people who try to bans guns are literals fascists, mainly due to their full support of imposing draconian Covid policies and forced vaccination and more people now than ever seem to believe the conspiracy theories like Great Reset, Great Replacement theory, One world government, *You will own nothing and be happy* etc any attempts will be redundant, there will be a massive pushback and solid chance to descent into civil war.
A politician can just use pro-gun and anti-fascist rhetoric to win the presidential seat.