Yes, because "riding the battery" is not a thing. Your gun is either in or out of battery. It's not a noun. It literally makes no sense, which is why he replied the way he did.
The correct thing would have been to say, "Don't ride the slide when chambering a round." And if he doesn't understand that, then let him continue to be an idiot.
But I have always thought it is rude to give advice to people who didn't ask for it. And don't butt in on a conversation between a guns shop employee and a customer. It confused the customer and pisses off the guns shop employee.
Last edited by WinterWizard; 11-29-2012 at 18:37..