(Salem, OR) -- The Oregon Department of Justice is asking a federal judge to pause part of the state's new gun law that takes effect on Thursday. The measure requires a permit to buy a gun, but the Oregon State Sheriff's Association and the Oregon Association of Chiefs of Police say in-person firearm safety training won't be able to happen. They also have other problems implementing the measure. Oregon is asking the judge to delay the permit requirement for two months. The other parts of the law, including a limit on gun magazine size and a requirement that background checks be fully completed before a gun sale can happen, would take effect.