I have forgotten much (and am too lazy to look it up), but, I do not think that the 371 is exclusive to Walmart, but I vaguely remember that walmart might have a specific one that is. Was it that one? Unsure, but I think that most 371's are wood and yours is not. I either have (or had, I would need to check) a few with that handle. Odds are high that I gave most away just because they are larger than I normally carry without a pocket clip. I thought that specific handle was nice though.
The 371 is the made in Chinal model and the 301 is the "premium" made in the USA.
301 uses a slightly better steel with the BOS heat treatment, which, in my opinion, makes Bucks 420HC steel better than a competitor using mostly the same steel. A different 420 variety is used on their Chinese versions. The 301 also has a specific handle material that (I think) they only put on their USA knives (do not remember what it is, but it works well).
I own a few of the China made versions, but if edge retention matters you want the USA made version. For most people, I don't think it matters, you just sharpen more often. I do like the standard USA made handle material. Not impressed with the standard wood. I prefer the handle that op has over their wood handles.
Nice knife. Only commented because of the Walmart comment. Don't know if it is true or not, but I think that there might have been one because I have heard them called a "wally knife" or something. Been a while though so maybe I am just old with a failing memory.