[Buckshot]

I am planning on having my SIG 551 SWAT converted to fire the .300 Whisper round, but I need to know some things about it before I do.
Since the SIG does have an adjustable gas vault, I guess this wil not be the biggest problem.
The only thing I am wondering about is if I need to have my bolt replaced by another model.
I guess if an ar 15 bolt doesn't need to be replaced, a 551 bolt won't have to be replaced either.

Anyone here who can help me out? :)