Alright gents I have a right feed auto****er my dad bought in maybe 04? It has been custom milled for sure other than that I have no info.

(Is that an old eclipse trigger assembly?)
Gun was bought at PBUSA in Houston way back when, maybe someone will recognize it.

(Any info on the reg, 3-way, front block assembly?)
My brother, who can not have anything nice, used the ****er a while back and apparently never cleaned it after he broke a bunch of paint in it. Needless to say after taking it apart and cleaning it the bolt looks like this.

(I was thinking of wetsanding and polishing but I think the corrosion is too deep, what do yall think?)
Basically, I have not been in the sport since 06-07 because of school and I now have started to get back into it and would love to get my dads marker up and running, any help would be so much appreciated! Is there a website that sells ****er parts still? Man has the sport changed! My angel 05 speed sure seems a little outdated but it keeps up with most guns out there pretty well.