I have several Eagle Arms prebans. They are excellent. The white stamp on a postban Eagle means it was built as a complete rifle at the factory. The white stamp is also on the ArmaLites, but they are sold as complete guns only. You can buy a new Eagle Arms lower (stripped or complete). It will not have the stamp. Most of the preban Eagles do not have the stamp even if they left the factory as a complete rifle, as that is a new practice started when they became ArmaLite. The exception is the batch of prebans that they released in the last year or so. These were Eagles that were built as the ban approached and then stashed to sell later. I am the proud original owner of one of these NIB, never been fired prebans. I believe that the preban Eagles are the best prebans and the postban ArmaLites are the best postbans. The postban Eagles are an excellent rifle as well. The main difference is that the Eagles come with a chrome moly barrel as opposed to the chrome lines on the ArmaLites. ArmaLite says that the postban Eagles are not quite up to the ArmaLite brand, but I have one of those as well as the new ArmaLite and I would disagree. The postban Eagle is an extremely nice rifle and again, the main difference is the barrel.