Send it back to Sig again. You will not be the first to have to do so.
If they cannot make it right demand a new gun or a refund.
Ask for Bill Silver. LOL
If you can get a refund get a Colt.
"Its a tool box... I don't care you put the tools in for the job that's all..." Sam from Ronin
The United States is a nation of laws: badly written and randomly enforced. -Frank Zappa
Without deviation from the norm, progress is not possible.-Frank Zappa