A federal judge in Denver won’t block a controversial new law banning ammunition magazines that hold more than 15 rounds since the law has already gone into effect, according to the Associated Press.

The sheriffs sought an injunction against the magazine ban pending the outcome of their lawsuit to overturn it. The suit also seeks to overturn another law requiring universal background checks.

“It is already the law of the state and there is nothing for me to enjoin,” Judge Marcia Krieger said.

The new laws went into effect July 1.

Krieger also said that both sides in the case agreed late Tuesday night on limitations to how the law will be enforced while the case is being heard, making an injunction unnecessary.