Re: Building a tactical 500
It's actually a Westernfield 550ABD, which (I believe) is styled after a much older Mossberg 500 action. There are a few differences between this shotgun and a newer mossberg. After some initial testing it appears the receiver will accept newer parts so down the road if I need or want to replace something it shouldn't be a hassle finding the parts.
The most noticeable differences are the Cartridge interceptor assembly, Magazine tube, action slide and the mating lug between the carrier and bolt.
I tried a new 500A cartridge intrceptor with the rear tab (no ear) in the receiver and it fits. Once I get this tub of parts back together, just for fun, I'll do a function test with a new interceptor. The original is in good shape so I'll continue to use it.
The old magazine tube has bands and a flat wound spring instead of the 10 bearing indentations found on the newer slide tube. Also the magazine tube had to be removed to take the forend off. That was a bugger! it was tight! but its done. I've ordered a new slide tube ( 7 3/4") to go with the extended magazine tube, which will update the tube and slide to the newer style.
Now the carrier and bolt is an interesting deal. While I cannot see my self ever having to replace either, if it came to that, I would have to replace both at the same time. This is the one area where old/new interchangeability really takes a nose dive. But really, is this something I'll have ever have to replace? I doubt it!
So far the lights are green across the board, and this is shaping up to be a fun project. I'll post some pictures later.
Edit* there are 10 not 8 bearing indentations. gunner