+1
I shot a 590A1, with ghost ring sights, and a 14" barrel at Rogers Shooting School a few years back. That was one heck of a setup. Obviously a 14" barrel is NFA territory, but one setup with a 16" barrel would be sweet too.
I know it's nit picking, and possibly even a typo on George's part, but on shot guns the limit is 18, not 16 like with rifles.
It was dreamed up by politicians, you don't expect it to be simple and sensible do you ?
FWiw I have seen alot of short stroke jams with pumps.
As to TAB's comment, you can use maintenance to reduce the chance of mechanical failure, especially with modern, simpler actions, but if the Gods have ruled against you even a SXS will fail sometimes .