Thinking about parting with my 10.5" AR pistol build. 
Ballistic Advantage upper and lower receiver, BA nickel boron BCG, SBA PDW brace, BA 10.5" barrel, forward blast diverter, RA 3.5 lb trigger, Matech rear flip up rear sight, Eotech XPS-2, troy industries H&K style flip up front sight, Cloud defensive black multicam Optimized weapon light.
Just putting this out there to see what happens.
Trades I would enertain would be for a 5.56 CZ Bren 2, Aug, or old sig 556.