The vice president downplayed harsh criticism the National Rifle Association has made about the administration’s gun violence task force.

Vice President Biden said Friday that his task force on gun violence recognized there was “no silver bullet” that would solve the problem and downplayed harsh criticism from the National Rifle Association about the administration’s efforts.

“We know that there is no silver bullet,” to stop gun violence, Biden said, ahead of a Friday meeting with video game manufacturers and retailers. He did not elaborate further.

Biden said he believed his Thursday meeting with advocates of gun ownership was “productive,” but he refused to comment when asked about criticism levied by the NRA following the conference.

“I thought we had a very straightforward, productive meeting,” Biden said.