Lloyd,
Just a thought, but, you could slip a lefty Remington safety into a right handed 1100 20 gauge LT, the lighter, more svelte version of the 20 gauge. I shot a right handed 1100 12 gauge for years with one of those safety buttons installed, and it worked OK.

The only problem is Remington 1100s, especially in sub gauge, are priced like precious metals futures, not shotguns. This seems to be a recent phenomenon, by the way.

Good luck,

Best,
Ted