I emailed a week or 2 ago asking about buying a couple of the caliper tool comparators for a 6mm and 7mm, and left a voicemail to the phone number on his website. I'm sure the guy is swamped building guns and all but I did not know if there was a better way to get these things. I hope he is in good health if there is anyone that reads this that knows him personally. I always worry about that nowadays.