Just received my barrel in .357 SIG from bar-sto,thanks to the efforts of DR. Ken Lunde.It's a winner!Very good fit and very accurate.Anyone else tried yours yet?I'm a very happy man right now!Barrel is serial #ed to the pistol.I know you should never say never but I can't imagine anything that would get me to seperate from this pistol.Most accurate and easiest shooting pistol I've ever owned.