Since it wasn't really tactical, I thought it put it here.
I saw this at a LGS listed as a Westernfield 550 same as Mossberg 500. I'm not sure how old it is but it's pre-1970 as it has only one action arm. It also has no markings of any kind on the receiver. I'm not quite sure when serial numbers were required but I'm figuring it's pre-1968.
The action is really smooth, almost like it's riding on ball bearings. It's really light. I might cut the stock to shorten the LOP, but I'm not sure yet.
For the price of an expensive 91/30, I couldn't resist.