Gun groups also have claimed the bill would set up a national gun registry. In fact, Manchin's proposal expressly prohibits that.
"How anybody that has read that bill that would think that would allow or entice the government to begin a registry is misleading and lying," Manchin said.
"Either they can't read, — and that's not accurate — they intentionally misrepresented and wanted to scare people, or they truly believed it for some reason," Manchin said. "But there's no facts to put that out there."
Manchin also shot back against GOP claims that he fully supports all of President Barack Obama's proposals relating to gun control.
"This is not President Obama's bill," he said. "I'm sure it's not the bill he prefers or likes. This is not a (Sen.) Chuck Schumer (D-N.Y.) or left-wing bill. . . this was truly a bill that was crafted right down the middle."
Manchin said many more colleagues in the Senate approved of the ideas in the bill but were afraid of the spin that was being put out by the NRA and the association's promise to score the bill as part of its regular gun-rights ratings.
He said if more members of the Senate talked to their constituents, they would get more support.
"You've got to sell it," he said. "Go back home, get your gun groups, all your people you respect, and sit down with them and explain the bill."
He also said if the NRA wanted to continue to "intimidate and scare" people, then they needed to get their facts straight.
"I'd rather them just say they don't like the bill, they don't like government and I'm against that," Manchin said. "That's fine, I respect that.
"What I don't respect is when you say the bill I've worked on with mostly people across the aisle does something that it doesn't," he said.
Contact writer Jared Hunt at busin...@dailymail.com or 304-348-4836.