Because the FBI has stated that it will not conduct background checks for the new law, no enforcement officer will be able to issue a permit to purchase a weapon as required by the measure.
Doing so would be a crime, the legal guidance states.
In addition, OSAA advised sheriffs that virtually all firearm magazines would be banned after the law takes effect.
Anyone possessing them would be committing a crime and could be arrested.
That includes off-duty police officers.
Voters approved Measure 114 last year with 50.7 percent of Oregonians saying "yes."
To qualify for a permit under the measure, an applicant would need to complete an approved, in-person firearm safety course, pay a fee, provide personal information, submit to fingerprinting and photographing, and pass an FBI criminal background check.