Similar experience to gwvt, my first one in Nov had a 12xxx serial, single trigger guard and open top front sight, small front sling ring. This one that came in last week from PSA has an 06xxx serial, the split trigger guard, a round front sight and a large front sling ring. The barf is a little beat up and is darker. The action isn't quite as smooth, but it hasn't been fired either. I also had to ream the rear dust cover pinhole a bit so I didn't have to use a punch each time. Overall it looks great though.