I bought one of the A1 upper assemblies and kept just the upper receiver, B/BC/CH for a carbine project. I removed the gas tube to unscrew the barrel, so the front sight hasn't been touched. The barrel is marked "C MP CHROME BORE". It's dirty but shows no rust or excessive wear. I haven't made any attempt to clean anything up. There was (and still is) a cardboard tube protecting the bore. Flash suppressor is a regular birdcage. There are no cracks or chunks missing on the handguards.
Asking $150 shipped, but will consider offers if it doesn't sell for awhile. I have some good pics, but am on dial-up. I'll try to get an email ready to send out with the pics to those interested.
ETA: Use email as I don't check here as often as I should.
For background info:
The upper was marked C and K, the carrier was marked C and the bolt was marked MPC. Upper had a teardrop assist and no deflector.