I have a 600AT
Date of manufacturer for your firearm with serial number H486399 is 7-25-80.
From Mossberg.
Hello and greetings from Central New Hampshire! I have a 600 at with a serial number of H217432. It's my understanding this is one that was manufactured in March of '79.
Never had a firearm the same age as me. Any help you folks could give me would be appreciated.
And no in the recoil pad that's not dirt. That's what's left of the wasp nest that was in it apparently. That butt pads all beat to hell. Definitely going to order a new one given that I know that wasn't the original that came on it.
She's been around for a while either that or the person or people that had this before me played a little roughly with it. I did clean it up. I tore it all down with the exception of removing the actual wood stock. Interesting how this one came apart. She runs damn smooth now. I think the only things I want to get for it are a new recoil pad and tube spring. Contemplating sanding the wood down and refinishing and lacquering it. Bring it back to life a little bit. I'm not really sure what to do about any of the other scuff scratches and dings on the receiver. Probably just leave that as it is. Anyway thanks for taking the time to read this.