Doesn't look like it in the Standard Catalog of S&W. Since they're a 'Hunter' model, no 4" barrels. And I find no full lug barrels earlier than the Mod 29-5 beginning ~1990-91.

You'll just have to settle for a 29-5 or later and have the longer barrel cut down. Or if you can find a full lug barrel, have it cut and mounted on a 29-3.

You'll have the only one!

__________________
Jim
S&WCA #819