Numrich Gun Parts Corporation has an online parts diagram. Go to http://www.e-gunparts.com If you cannot see what you need, let me know as I have scanned the Model 1898 shotgun parts diagram into my computer and can email a copy to you if necessary.
I hope this helps.
Sorry for the late reply, thank you for your info. I'm going to sell the old Marlin, I have 3 guns I'm working on and just don't have the time run down parts for the 19-s, but thank you for your time and information, Rick.