Just through the process of googling other stuff I saw that the Gatling Gun Company was in Indianapolis. I never knew that. I also didn't know that Richard Gatling was buried in Crown Hill Cemetary. You learn something new every day.
I have a voodoo tactical double bag I bought at the 1500. I don't know what size it is, but I do like it a lot. Wish I would have gotten a longer one. Other than not fitting every gun I have it's great.
On my CZ 452s I use these
https://www.jnpgunsprings.com/product_info.php?cPath=10&products_id=236
And then use Burris signature zee rings. Of course that doesn't help you get them by Sunday