Maybe, but the AR I built in 2004 (immediately after the old ban sunsetted) cost me about $550 to build and sold (well used!) for $1100 immediately after Obama was elected. I turned that $1100 into a S&W M17-2 ($450) and a CZ Bobwhite 20g shotgun ($650). The M17 has increased in value (about $700ish these days, but peaked at nearly $900 a few years ago). I suspect the CZ has held its value reasonably well based on what I see in gun stores.
Doubled my money on a used gun, which became two guns, which would likely sell for more than I made on gun #1 if I sold them both (no intention to sell either).
Chris