They are Plan B Bravo Hub inserts and Plan B Muzzle devices 5/8x24.

I'm putting these are pretty much all my guns, that way can I change suppressors back and forth and never have to worry about what muzzle device I have on which gun.

It is 3 Bravo Hub inserts and 2 Muzzle devices. $340 for all 5

260-267-6693