Just found this. Too long to post https://www.revisor.mn.gov/bin/bldbill.php?bill=H0241.0.html&session=ls88 H.F. No. 241, as introduced - 88th Legislative Session (2013-2014) Posted on Jan 31, 2013 Subd. 5. Registration of assault weapons. (a) A person who legally owned or possessed an assault weapon before February 1, 2013, and who desires to keep ownership or possession of the weapon shall comply with the following requirements: (1) submit to a background check conducted by the chief of police of the municipality in which the person resides, or if there is no police department the sheriff of the county in which the person resides, to confirm the person is not prohibited from possessing a firearm under state or federal law; and (2) unless the person is currently prohibited by law from possessing a firearm, immediately register the weapon with the appropriate law enforcement agency. (b) A person described in paragraph (a) shall comply with all of the following: (1) safely and securely store the assault weapon pursuant to the regulations adopted by the appropriate law enforcement agency; (2) agree to allow the agency to inspect the storage of the weapon to ensure compliance with this subdivision; (3) annually renew the registration, subject to the completion of a new background check; (4) possess the weapon only on property owned or immediately controlled by the person, or while engaged in the legal use of the weapon at a duly licensed firing range, or while transporting the weapon in compliance with United States Code, title 18, section 9.33926A; and (5) report the loss or theft of the weapon to the appropriate law enforcement agency within 48 hours of the time the discovery of the loss or theft was made or should have been made. (c) Registered assault weapons may not be purchased or transferred, except for transfer to the appropriate law enforcement agency for the purpose of surrendering the weapon for destruction. (d) The registered owner or possessor of an assault weapon may not purchase additional assault weapons. (e) The appropriate law enforcement agency may charge a fee for each registration and registration renewal pursuant to this subdivision. (f) Persons acquiring an assault weapon by inheritance, bequest, or succession shall, within 120 days of acquiring title, do one of the following: (1) surrender the weapon to a law enforcement agency for destruction; or (2) modify the weapon to render it permanently inoperable. (g) Each chief of police and sheriff shall do the following regarding assault weapons registered under this subdivision: (1) adopt regulations specifying how a person who registers a weapon shall safely and securely store it when it is not being used; (2) implement a policy of inspecting the storage of weapons; and (3) conduct background checks and implement a registration system. EFFECTIVE DATE.This section is effective September 1, 2013, and applies to crimes committed on or after that date. Sec. 7. PERSONS POSSESSING ASSAULT WEAPONS ON EFFECTIVE DATE OF ACT; REQUIRED ACTIONS. Any person who, on February 1, 2013, legally owns or is in possession of an assault weapon has until September 1, 2013, to do any of the following without being subject to prosecution under Minnesota Statutes, section 624.7133: (1) remove the weapon from the state; (2) surrender the weapon to a law enforcement agency for destruction; (3) render the weapon permanently inoperable; or (4) if eligible, register the weapon as provided in Minnesota Statutes, section 10.29624.7133, subdivision 5. EFFECTIVE DATE.This section is effective the day following final enactment. Sec. 8. REVISOR'S INSTRUCTION. The revisor of statutes shall strike references to "semiautomatic military-style assault weapons" in Minnesota Statutes, sections 609.66, subdivision 1f; 624.712, subdivision 6; 624.7131, subdivisions 1, 4, and 10; 624.7132, subdivisions 1, 3, 4, 5, 6, 9, 10, 12, 13, 14, and 15; 624.7141, subdivisions 1 and 3; and 624.7181, subdivision 2. The revisor shall replace all other references to "semiautomatic military-style assault weapons" in statute with "assault weapons." EFFECTIVE DATE.This section is effective September 1, 2013.