As per this thread:
Conversed over email for a few days and finally decided on a price for barrel, blackout ammo, muzzle brake and gas block. The seller said he did not have a way to remove the barrel so I offered to send him my Barrel wrench, it was one of those decent quality USMC ones that just seemed like it would never break.
The guy said he could never get a paypal account working and preferred MO, I usually don't send USPS MOs to people with low to no feedback but The guy was super responsive to my emails and didn't seem flakey, plus he seemed to act like he had been around the community, I am thinking he may have just made the account as a double to rip off some people and is actually still here on a different account.
On November 25th:
"Received your mail today and just finished boxing everything up for you...I'll try and get the package in the mail for you tomorrow"
Now that I look back I'm not sure how this worked because he had to use the armorer's wrench to take apart his rifle...anyways.
Repeated emails and IMs to this guy and nothing so here we are.