How do you tell early guns (with import parts) from 100% US guns?

[Snafu12]

?

[Charlie Bison]

The most sure fire way is to call USFA and give them the serial number.

[Pettifogger]

Visually, there are a couple of things you can look for.  The early guns are marked U.S. Patent Firearms Company.  The later guns deleted the word "Patent" and now use the familiar USFA.  The early guns also had a safety in the hammer.  When you cock the hammer you can see a little moving bar just below the firing pin.

[Hobie]

Visually, there are a couple of things you can look for.  The early guns are marked U.S. Patent Firearms Company.  The later guns deleted the word "Patent" and now use the familiar USFA.  The early guns also had a safety in the hammer.  When you cock the hammer you can see a little moving bar just below the firing pin.

Or the cuts for the same...

[Capt. John Fitzgerald]

Pettifogger and Hobie are right, but that advise only applies to the first year or two of production ('94-'95).  Just about all guns made in the '90's were, at least, partially of Italian make.  USFA (originally USPFA) started out importing Uberti parts that were fit and finished here.  The change over to "all US made" was a gradual one, with many guns a mix of imported and US made parts.  It wasn't until sometime after the year 2000 that USFA was able to make an honest "Made in the USA" claim.

[Fox Creek Kid]

I know of a used Uberti USPFA languishing in a gun shop with a price tag of $850. It will sit there a long time IMO until some FNG comes along and does not realize the difference.