I am looking for the 20" and can't find anything anywhere. All out of stock

I have the 18.5" and i love it. Have about 200 rounds through and counting, not one jam.
Also bought a Remington 870 Marine Magnum recently and i had to send it back to Remington due to constant extraction issues. I was actually going to try and polish up the chamber and breach myself but i was worried about ruining the Nickel plating. Pretty annoying when you spend $800 on a gun that doesn't function >.<
But +1 for me on the Mossbergs! Have had nothing but good fun with them and no issues!
If someone finds the 20" 590a1 model somewhere in stock lemme know