Oh my
That does not look good. Not good at all.
I can't really discern the full extent of the damage in the second pic but looking at the first image, the angle of the visible crack appears to mirror the angle of the barrel camming lug face on that side.
Can we see an image of that camming lug from above and from the inside looking aft at the cam surface?
How many rounds fired on the installed recoil spring when you discovered this?
Was the recoil spring the factory 895240000 part or aftermarket?
Cheers
Bill