Just a warning, Briley will install their thin-wall series tubes in guns with muzzles that are already so thin that other choke shops won't do it. I'm proof of that statement. Just because they will do so, though, does not mean it is advisable. The barrel metal at the muzzles often becomes paper thin and, when the tube is screwed out for any reason, the muzzles are extremely susceptible to denting or damage. I've seen some I could have squeezed into ruin with my thumb and forefinger, with the tube out, had I tried.

Also, just because a barrel(s) is fitted with Briley thin-walls doesn't mean it is automatically paper thin. I have some that aren't.

SRH

May God bless America and those who defend her.