Originally Posted by FernandoTheCommando
Update. Got the Mossberg brass front bead in mail today. It threaded right into the heavy barrel on my 590a1. So, for anyone like me, who read a customer review that said it doesn't fit the a1 heavy barrel, they were incorrect. It fits perfectly.
I like to read reviews but I don't always trust them. Someone could have cross threaded the sight and then complained because they where too stupid to understand what they did.
Glad you got it all together.