The first 2 years Obama was in office, Dims controlled the House, the Senate and the WH.
Why was there no AWB passed? Even after Sandy Hook, Obama said if we can't get a ban passed after such a major tragedy, then he doesn't know what it'll take (i.e. Emotions are at their highest, which is what more gun control needs to take advantage of).
I don't know what makes Biden think he can get this passed without the House under Dim control. I also don't see how Obama made him the Gun Control Czar after Sandy Hook, but he still failed to get a ban passed into law.
No matter what Biden says, reality will continue to get in his way. The 1994 ban had one positive outcome -- more people went out and bought AR-15s after the ban was lifted in 2004.