Well, I fiddled around with the gun a little more today... Following some photos of similar guns that I found an was able to break the gun down. It came apart incredibly smooth once I figured out what to push and how to hold it.

Here is a link to more photos that I took today.

Any information on the manufacture date, model, etc., would be appreciated. Do you think that is was fitted with a new stock?

All numbers match throughout the gun. You were right on that the number in the earlier photos was the serial number.

Model, date of manufacture?

http://www.smugmug.com/gallery/48015522_8Q6tc2#!i=3930762137&k=TLwZrvf

Last edited by ADKHiker; 03/15/15 07:34 PM.