Whether you can have choke tubes installed depends on the wall thickness at the muzzles. If they're iffy, let Briley do it for their S1 series thinwalls. They did a Perazzi of mine once that was so thin that I was horrified I might bump them on something with the tubes out. Knowing what I know now I would not have done that. I'd have opened them up to MOD top and bottom and shot them at everything.

SRH

May God bless America and those who defend her.