a couple remingtons, need info

[BC7stw]

Just bought a browning fn auto 5, serial# 46020 2. The space between the 0 and 2 is the way it's stamped. Looked up the number and it shows these series of numbers stopped at 438000. Can some one tell me what year this shotgun is, value is not important, gunna shoot the thing.

The other is a remington model 8 in 35 remington, serial number 117, I believe it was made in 1906. Firing pin spring is too weak to fire and I was asked to see if I can fix it. Anybody worked on these, is this spring hard to find?

Thanks