It's been a long time since we had a real chance to advance gun rights on a national level. We had a pair of good Supreme Court decisions, and a few in federal courts that at best did not suck. We have to go back to the Protection of Lawful Commerce in Arms Act in 2005 to get a legislative advance, and that was really just playing defense against the courts. Before that, there was the 1986 Firearm Owners Protection Act which traded a ban on newly manufactured automatic weapons for a number of minor improvements and reforms to the Gun Control Act of 1968. (It was a bad trade, in my opinion).
If Congress manages to actually pass it, we will move the ball forward. That would be nice, even if the legislation ends up having some flaws.