I just signed on to the group. Purchased a 590a1 a couple days ago and wanted to benefit from the wealth of expierence and wisdom out there. I'm retired military and am living outside of Atlanta. Haven't fired a shotgun since Vietnam. It's been awhile. Hope to gain some insight on what to do and what to avoid. I need to add some mods as I got a basic model. The gunshop was sold out of most models so I will looking for some thoughts and recommendations. This weapon will be used for home defense. I have the 18.5" barrel. Thanks for allowing me in.