Attorney General Maura Healey wants a federal judge to throw out a lawsuit brought against her by four gun retailers and a national shooting organization, arguing that the case is in the wrong court and that her office’s crackdown on the sale of so-called “copycat” rifles is constitutional.

“All of these claims must be dismissed,” Assistant Attorney General Julia Kobick wrote in a motion filed yesterday. “This Court has no jurisdiction to adjudicate the state-law claims because the Eleventh Amendment bars state-law claims against state officials in federal court.”

The lawsuit was brought in September, two months after Healey’s office issued an enforcement notice to Bay State gun-sellers and manufacturers that outlined a ban on the sale of what she called “copycat” assault-style weapons. The guns meet Massachusetts restrictions on military-style features such as collapsing stocks and high-capacity magazines, but are similar to AR-15 and AK-47 rifles in appearance. The notice essentially explains how Healey interprets the Massachusetts Assault Weapons Ban.

Four gun shops and the National Shooting Sports Foundation say the notice was “unconstitutionally vague, invalid, and unenforceable,” and “violates due process protections.”

Healey’s office argued that even if federal court was the right place to bring the suit, it should be dismissed because the claims have no merit.

“The Attorney General plainly had authority,” the motion states. “As the chief law enforcement officer of the Commonwealth, to notify the public of her interpretation of a criminal law she is charged with enforcing.”