Hey guys/ gals, 1st post here, some may recognize my title from sigforum and packing.org, but now for the question. A while ago, my parents bought a Mossberg from a gunshow. This Mossy had the following features from the factory: 7rd tube mag, factory pistol grip, parkerized finish, 20" barrel, and heat shield. The gun itself says Mossberg 500, but he called it a 590 when he sold it to them. He did say the gun was kind of rare, and I couldn't find it on Mossberg's site. Just wanted to know exactly what we got.