I'm just taking a guess on how it will go down.
I think the CPC would do a partial rollback on some of the JT era policies, but not a full rollback. They will keep taunting that carrot, giving just enough to satisfy the single issue pro-gun voters. The only way they go back to pre-2020 would be perhaps if they win several elections in a row.
Following this, the status quo of minor changes in each direction probably will continue on for decades.
As I said, it's just a guess and possible course of action we can see playing out based on how we got to where we are now. There's some wildcard factors, like god forbid there's some kind of gun related event that accelerates things, or the unlikely chance of a far-right government taking power, or maybe US annexation (I am not saying I believe this would happen, just an example of a black swan type thing).
And like I said, feel free to tear my prediction apart! Curious what would possible cause a different outcome.