LNIB American Tactical AR-410, 18" barrel, on their proven Omni Hybrid lower receiver.  I have sold a handful of these guns chambered in 5.56 NATO, and guys love them.  Here is one chambered for a .410 shotgun shell :-)  Comes with a 5 round magazine, flip up sights, and the box.

I am a private FFL dealer in the Green Bay area.  Check out my other listings by clicking "Armslist Store" below my original registration date.  Price includes tax and background check.  Yes, I will ship to your FFL.  Call, text, or email.  920.530.0seven0zero.  Not interested in trades at this time.  Thanks for looking.  -Josh