No. "Doing business" is showing a potential customer a gun, answering his questions, and haggling on the price...and that's where it ends.
There's a little thing known as "Respecting other folks' property" that most people have a grasp on.
Doing business doesn't include an on-the-spot teardown without asking for permission first.
Will all due and sincere respect to your position. . .
My wife and I have two big Browning safes full of guns, plus a smaller safe in our airplane hangar with guns in it.
We have bought dozens upon dozens of guns of all makes, models and calibers.
The vast majority have been through private individuals--helluva lot easier to do business with them. Your story and a few others remind me of similarly bad experiences I've had in gun stores going all the way back to my service and law enforcement days.
Yet at the range and gun store we all pitched in and helped run for one of our sister agency's agent, we sold guns out the wazoo because we insisted on having the polar opposite attitude of the gun stores we'd been to in our careers. And seeing as how we were all feds, we'd all been stationed and scattered about the country--yet, we could all tell the same stories about gun stores that were simply an insulting pain in the butt experience to deal with.
I'll happily admit there is a line when it comes to customers handling guns. But we came up with a novel approach when we handed a gun to a potential customer--
"Let me know if you'd like to dry fire it--we've got some snap caps we'll put in. And if you want to field strip it, let me know and I'll show you how."
Holy cow we sold a lot of guns. Every cop in town ordered their personal firearms from us, and as you know, new and novice owners go where the cops go.
The owner of this place was an old-time FBI RAC who'd done a number of years with HRT, at Quantico as an instructor, etc etc. His mantra was, "Don't ever berate the customer; educate the customer."
Worked pretty well.
Jeff