LRI does a fantastic job on bushing the AI bolts and turning down the firing pins. I had them bush the bolt for my AXMC before I even fired it because I never wanted to worry about cratering primers.
Where you might run into a problem is if you try and buy a spare firing pin from mile high to send to LRI to have them turn down for a spare. They prefer not to sell certain fire control and bolt components to end users, they would rather replace them under warranty when you send the rifle in. I had to talk to Adam and let him know what I was doing, then they sold me me one. I went through the same thing many years ago when I had Wade Stuteville bush the bolt on my AE Mk3 for 6 dasher and I wanted a spare firing pin, and same thing again a couple years ago when I wanted to send a spare firing pin to Enrique when he was doing my 223 conversion bolt.
If you buy a factory small firing pin bolt, there will be no questions regarding warranty if you ever have issues down the road... but the factory AI SFP bolts aren't cheap and as was mentioned some people have been waiting over a year for caliber conversion/SFP/LH bolts. Anyone who's had an AI knows that immediate parts availability is often one of their weak points. LRI on the other hand can turn around a bolt bushing job in a week typically.