if this ban is anythign like the last one, yeah. There are tons ar uppers floating around out there and even if the ban goes in effect you will still find the uppers. they might not be as cool as non-bad uppers but unless you planning to add a silencer to your rifle/carbine you can wait.
even if they do manager to to ban the uppers there are abunch of them already floating around. I would not be too difficult to find and buy one after (although prices might go up a bit). since the uppers dont require and ffl or need to be registered then even if you get caught with it you can say that its preban. the lowers and 30rd magazines are the important items if your interested in AR's
while the 2nd amendment might not be top priority to the democratic candidate it is on their agenda and high on it. Might not happen first week in office but chances are very good itll come up during the first half of the term. there already a new assualt weapons ban that has been written and is seeking approval.
nothing new for most of you but if you havent heard check it out.
http://www.freerepublic.com/focus/f-news/1787856/posts
it would ban "sniper rifles" and "street sweepers" too