Ed Brown is a manufacturer of stock pistols, not custom pistols.
Their options are extremely limited: ambidextrous safety (or not), extra magazines, and choice of finish (blued, stainless, two tone, black paint) The've recently (since my purchase) offered pistols with slick slides, no lettering on either side.
That's it!
Ya want a different trigger, different sights, grips, etc? Ain't gonna be done there, they don't do custom work.
To get reliable ejection of full length, live FMJ cartridges (during training drills) I had to have a gunsmith mill out the front lower corner of the ejection port. Their solution was to shorten the ejector, but wouldn't guarantee good ejection if I did. They refused to even consider the machine work.
-- Chuck