The California gun store that put the nation’s first smart gun on sale is facing a furious backlash from customers and gun rights advocates who fear the new technology will encroach on their Second Amendment rights if it becomes mandated.

Attacks in online forums and social networks against the Oak Tree Gun Club have prompted the store to back away from any association with the Armatix iP1 smart gun. The protests threaten the nascent smart gun industry, which received a jolt of support recently when a group of Silicon Valley investors offered a $1 million prize for promising new technology.

The vitriol began almost immediately after The Washington Post reported last month that the Armatix iP1 smart gun was for sale at the pro shop. Electronic chips inside the gun communicate with a watch that can be purchased with the gun, making it impossible to fire without the watch. Gun control advocates, who believe smart guns could reduce gun violence, suicides and accidental shootings, marked the moment as a milestone.

“These people are anti-gunners,” someone said of Oak Tree on the store’s Facebook page, adding, “I will never step foot in this dump.” On Yelp, a user wrote, “If you care about the ability to exercise your [Second Amendment] rights, I would suggest that you do not continue to frequent this place.”