I noticed different rifles too, but missed the lefty.
Yeah, I thought the hat was a litle weird...and that it survived the whole 8 years he was stumbling around in the wilderness, be chased, shot at, etc.
Anyhow, that's still by far the kind of show I prefer...a documentary narrated by historians with occasional scenes dubbed in for visual effect...instead of a full length "hollywood movie" that attempts to portray how something was.