it's the assualt weapons ban. once it expires, we can have more than just 2 of the scary features (pistol grip, detatchable magazine, flash suppressor, bayonett lugg, bipod, etc) that we can currently have on weapons made after 1994.
oh yeah, and 'high capacity' magazines will once again be available to the normal public at regular prices. no more buying pre-ban mags for 100-fucking-dollars.