http://www.arsenalfirearms.com/products/af-2011-a1-double-barrel-pistol

Looks like someone couldn't put the crack pipe down and came up with this.  At first I thought, WOW...  Although not considering this purchasing this, just curious about the legal/illegal side of things.  I am not a lawyer.  With the specs stating "2 single magazines, paired with single floor plate, 8+8 rounds", my guess would be this magazine would have to be blocked/limited to a 5+5.  Right?

Looks like you need King Kong hands to get a good grip on it

my guess is that if its a single floor plate that's "permanently attached" that would make the mags connected and then it'll be considered one mag, if its something like a mag coupler, the mags each would still be independent since its not permanently attached, for ex. 2 AR mags with a mag coupler or duct taped together, it's still 2 mags. mako group also made the pentagon mag coupler for the AR to put 5 10 rounders together for restricted states, each mag still individual 10 rounds. however if you have 2 single stack mags that are individually inserted, and also each fire control group as well is independent from another, i would guess its legal since each mag is only single stack and its below 10 rounds mag limit. just my educated guess, I'm not a lawyer!

Odd, it looks like it has two triggers. I wonder what would happen if one round delay fires after the first one goes off?