Need Help: Sig 551-2 Sp Suppressor

I’m specifically looking for an adapter that would allow the use of a Gemtech Halo on a 16" Swiss Sig 551-2sp carbine.

The Flash hider for this rifle is actually part of the barrel and does not come off. The rear of the Flash hider has a taper.

If anyone can point me in the right direction I’d appreciate it! :happy: