Hmmmm, this one has a 4" barrel I'm pretty sure. I did some searching, DEEP searching, and I found some info... maybe. I think this may be one of those guns that one would have to take to a BIG gun show and find an antique gun collector. I've found numerous Colt Commando references, surprisingly, but none really matched the gun I saw. You guys know how it goes... it's one of those guns that is hard to trace. I myself have an old .30-06 that had NO markings on it. I couldn't find out what the hell gun it was until i took it to a big gun show. Apparently, I have a Vietnam era sniper rifle manufactured by Springfield Armory. The gun had NO markings on it whatsoever. How my dad found out it was a .30-06 is beyond me. My dad was in Vietnam, but he'd never went into ANY detail about his time there, which is not uncommon. For all I know, it could've been his... except that he's a REALLY poor shot. If he's faking his lack of skill in shooting, he's VERY convincing.