I plan on buying a Mossberg 500 and yesterday had a chance to buy a used one from a friend. I almost got it but on inspection of the barrel I noticed bumps inside every place where the fins or whatever are that hold up the rib. Is this normal? I have never seen this before and thought it may wear there so said I would have to check into this. This gun supposedly has had 6 shots though it, was won at a raffle and he purchased it for his son. Appears to be walnut vs hardwood and also is engraved vs the new ones being plain. Any comments are welcome.
Kurt
Kurt