Buy the whole thing for 650 or I can piece part it out.
The whole upper goes for $650
Parted out prices as follows:
Bushmaster Flattop reciever & bolt carrier (minuse the bolt that stays with the barrel) 200
LaRue Tactical 12" free floated forearm LT1512 - $225
White oak Armament PacNor barrel in 204 Ruger 26" with headspaced bolt - $250
It cost me $400
The upper has 250-300 rounds through her, shoots nice.
Here is a 5 shot group at 100 yds - I pulled one (grin) I just shot the group quick so folks could see one the last time I was at the range.
I have pictures of all the stuff - PM me and I'll email them to you.
Here's how the rig looks in one piece with a scope on it.
Spot