Heres my list help me out if I am missing anything

White Oak stripped upper A3 88.00
Upper parts kit 16.00
MRF-MX 10" extended 269.33 (on back order)
PRI Gas Block 53.33
Bushmaster Super Light 16" Barrel assembly 195.00
Gas Tube and roll pin 10.50 Total Price for Upper 632.16
Aimpoint Comp ML2 2 MOA dot with 2X mag 469.99
Aim point mount 65.00 ( havent found actual price guessing) Total price for Optic 534.99

Tools

Roll Pin Punch Set 19.02
Snap ring Pliars 11.95
3/4" Plastic Brass hammer 11.89
Receiver action Block 43.75
Oly Arms Multi purpose armorers tool 36.50
Generic Vise 55.00

Total Price for tools I dont have 178.11

Total Price 1345.26

Having an AR15 Upper built "ALMOST" exactly the way you want it..... PRICELESS!

More of a RECCE carbine concept.  See this link:

MSTN RECCE Carbines

My build based on this concept:

Very Nice!  I wish TROY made a 12" or better yet a 14", I wish some one would make a 14" you get the dissy look with a standard 16in barrel with no front sight.