My guess is that demand is somewhat stagnant because anybody who wanted an AR over the past 6 years or so likely already has one (or more.)
For new purchases, people are probably doing a "watch and wait" regarding any potential gun bans.
Nobody wants to spend top dollar on something only to get a letter in the mail in a few months telling them to either register it as an NFA or turn it in or face felony charges.
IF a gun ban goes into effect and IF it "grandfathers" in firearms that are already owned (as the 1994 AWB did), THEN I would expect to see a buying frenzy between the date the law was signed and the effective date of the new law.
OTOH, if a gun ban is passed that does not "grandfather" in already owned firearms, then I'd expect to see the bottom drop out of the AR market as people try to ditch them for cash while they still have some value.