Trump's weakness on gun rights amounted to what, the bump stock ban? If we factor in comments as well, tepid and retracted comments in favor of red flag laws (which is the context of the quote
@ShadowArxxy mentioned) and restrictions on silencers? Yeah, they were shit takes, but not worse than many Republican congressmen.
In contrast, during an August 2019 interview, Biden in response to a question about whether or not the Biden administration would "come for [people's] guns" said "Bingo, you're right if you have an assault weapon. The fact of the matter is they should be illegal. Period."