Just got my Sig brace. Highly recommend it. What caliber are you running in the pistol and for what purpose?

Not sure what happened to my lower--my FFL didn't send the copy of his license yet and it's been over 3 weeks. His wife walked out and he'll be unemployed and homeless by 31 December. I've called hI'm a couple times to check in but no response to my last call. If I'm holding together after work I'll probably stop over and check in.