Complete Olympic Arms 9mm upper plus 3 converted Sten mags. Upper has A1 sights, forward assist. 10.5" Barrel with 5.5" Commando-style flash hider for 16" total length. The Sten mags have been modified with a mag block of solid engineering plastic, so no separate block is necessary and you can use the standard mag release. The barrel is bright, the upper functions well. The finish is probably 90%--there's a few scrapes from usage, but nothing major.
The kit is ready to go, all you have to do is mount this on your standard AR15 lower and rock and roll!
$600 shipped within the lower 48.
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Edited to add: This upper has the "pre-ban" bayonet lug and flash hider. Of course now that the ban is gone it's legal for any receiver.