[68c15]

Who is the Western Field expert here? I just acquired a 04M 491A and would like to know its age as well as help finding parts

 

[Hawg]

It's a Mossberg 46B, made in the 40's. You can try Numrich for parts. Search | Numrich Gun Parts

 

[TRAP55]

May have more in common with a 45B, being "hardware store" branded, I think it's mix of both. Call Havlin for parts, and they can tell you exactly what it is, and what fits.

Mossberg .22 Rifle Parts

 

[Empty_Holster]

Here is a link to Gun Parts : Mossberg Rifles 45B Parts

You will probably find it will cost more for the parts to get it running than it is worth.