Split up the Colt parts from the barrel if you're going to sell it on that other site. Be sure to list the bolt, carrier, and handle specifically as being included or not. Oh, and the length of the barrel and if it is threaded, plain, or perm-attached device.
Barrel by itself, depending on extra info, $100
Upper, ask $150. Bolt, etc helps but A2 isn't as popular as a flattop.
I might be on the low side, hate waiting around forever for something to sell. Depending on patience and budget you could ask higher and negotiate from there.
Now here of course, you need to add in the locals-only discount :mrgreen: