I am new to forum but looking for info - I got a 87 D from a customer - she had it in basement near pool chemicals - chlorine etc. - totally rusted up where exposed - actually still had original bluing and no rust under the stock.

Stock had been totally cracked through from just forward of trigger guard up through to just in front of receiver - looks like someone took a baseball type swing at something - had been pinned and glued and finish is shot - looks like birch or cheap light weight wood. I separated pieces - very little wood missing - cleaned up and got good fit-up - gorilla glued and pin nailed and seems solid - will sand and finish up as best I can but am looking for replacement stock - not sure what all models will interchange.

Started totally dismantling - action seems to work fine though needs full clean and lubing. Got hung up at point of removing outer magazine tube - couple of gunsmiths were not totally sure but thought it should just pull or tap straight off - I could see no pins or lock screws, could see it moving vs. the elevator and vs. both the the rear and front guides. I went ahead and drove it off with a rounded bar in the cartridge feed slot and it finally cleared the rear guide and I was able to pull it back out through the front guide. Then I found the ragged, punched through dimple that was hanging up in the cavity in the rear guide opposite the cutout for the take down screw.

My questions are - did I use the proper method for removing tube or is there some better way?
Is that dimple necessary for retaining the tube in position? - my tube fits very tight on the elevator and it looks like the takedown screw could project slightly into the hole in the tube and prevent it from rotating or pulling out towards he muzzle. If it is not needed, I will grind and knock it down when I reassemble. If it is needed, how was it put there? - did they just punch it out through the takedown screw hole?

Also as far as the rusty barrel, there is nothing to save so I am attacking with Kroil, rust buster, wd-40 and a wire brush - will figure out how to protect and finish once I get it cleaned up - even under the heavy rust it doesn't appear to have noticeable or heavy pitting - will know in a couple of weeks

Input, advice and answers would be appreciated -