(a) For the purposes of this section, “long gun” means a firearm, as defined in § 53a-3, other than a pistol or revolver.

(b) (1) Except as provided in subdivision (2) of this subsection, no person, firm or corporation may sell, deliver or otherwise transfer, at retail, any long gun to any person under eighteen years of age.

(2) No person, firm or corporation may sell, deliver or otherwise transfer, at retail, any semi-automatic centerfire rifle that has or accepts a magazine with a capacity exceeding five rounds to any person under twenty-one years of age. The provisions of this subdivision shall not apply to the sale, delivery or transfer of such a rifle to any person who is a member or employee of an organized local police department, the Department of Emergency Services and Public Protection or the Department of Correction or a member of the military or naval forces of this state or of the United States for use in the discharge of their duties.

(c) On and after April 1, 2014, no person may purchase or receive any long gun unless such person holds a valid long gun eligibility certificate issued pursuant to § 29-37p, a valid permit to carry a pistol or revolver issued pursuant to subsection (b) of § 29-28, a valid permit to sell at retail a pistol or revolver issued pursuant to subsection (a) of § 29-28 or a valid eligibility certificate for a pistol or revolver issued pursuant to § 29-36f.

(d) No person, firm or corporation may sell, deliver or otherwise transfer, at retail, any long gun to any person unless such person makes application on a form prescribed and furnished by the Commissioner of Emergency Services and Public Protection, which shall be attached by the transferor to the federal sale or transfer document and filed and retained by the transferor for at least twenty years or until such transferor goes out of business. Such application shall be available for inspection during normal business hours by law enforcement officials. No such sale, delivery or other transfer of any long gun shall be made until the person, firm or corporation making such sale, delivery or transfer has ensured that such application has been completed properly and has obtained an authorization number from the Commissioner of Emergency Services and Public Protection for such sale, delivery or transfer. The Department of Emergency Services and Public Protection shall make every effort, including performing the national instant criminal background check, to determine if the applicant is eligible to receive such long gun. If it is determined that the applicant is ineligible to receive such long gun, the Commissioner of Emergency Services and Public Protection shall immediately notify the (1) person, firm or corporation to whom such application was made and no such long gun shall be sold, delivered or otherwise transferred to such applicant by such person, firm or corporation, and (2) chief of police of the town in which the applicant resides, or, where there is no chief of police, the warden of the borough or the first selectman of the town, as the case may be, that the applicant is not eligible to receive a long gun. When any long gun is delivered in connection with any sale or purchase, such long gun shall be enclosed in a package, the paper or wrapping of which shall be securely fastened, and no such long gun when delivered on any sale or purchase shall be loaded or contain any gunpowder or other explosive or any bullet, ball or shell. Upon the sale, delivery or other transfer of the long gun, the transferee shall sign in triplicate a receipt for such long gun, which shall contain the name, address and date and place of birth of such transferee, the date of such sale, delivery or transfer and the caliber, make, model and manufacturer’s number and a general description thereof. Not later than twenty-four hours after such sale, delivery or transfer, the transferor shall send by first class mail or electronically transfer one receipt to the Commissioner of Emergency Services and Public Protection and one receipt to the chief of police of the municipality in which the transferee resides or, where there is no chief of police, the chief executive officer of the municipality, as defined in § 7-148, in which the transferee resides or, if designated by such chief executive officer, the resident state trooper serving such municipality or a state police officer of the state police troop having jurisdiction over such municipality, and shall retain one receipt, together with the original application, for at least five years.

(e) No sale, delivery or other transfer of any long gun shall be made by a person who is not a federally licensed firearm manufacturer, importer or dealer to a person who is not a federally licensed firearm manufacturer, importer or dealer unless:

(1) The prospective transferor and prospective transferee comply with the provisions of subsection (d) of this section and the prospective transferor has obtained an authorization number from the Commissioner of Emergency Services and Public Protection for such sale, delivery or transfer; or

(2) The prospective transferor or prospective transferee requests a federally licensed firearm dealer to contact the Department of Emergency Services and Public Protection on behalf of such prospective transferor or prospective transferee and the federally licensed firearm dealer has obtained an authorization number from the Commissioner of Emergency Services and Public Protection for such sale, delivery or transfer.

(f) (1) On and after January 1, 2014, for purposes of a transfer pursuant to subdivision (2) of subsection (e) of this section, a prospective transferor or prospective transferee may request a federally licensed firearm dealer to contact the Department of Emergency Services and Public Protection to obtain an authorization number for such sale, delivery or transfer. If a federally licensed firearm dealer consents to contact the department on behalf of the prospective transferor or prospective transferee, the prospective transferor or prospective transferee shall provide to such dealer the name, sex, race, date of birth and state of residence of the prospective transferee and, if necessary to verify the identity of the prospective transferee, may provide a unique numeric identifier including, but not limited to, a Social Security number, and additional identifiers including, but not limited to, height, weight, eye and hair color, and place of birth. The prospective transferee shall present to the dealer such prospective transferee’s valid long gun eligibility certificate issued pursuant to § 29-37p, valid permit to carry a pistol or revolver issued pursuant to subsection (b) of § 29-28, valid permit to sell at retail a pistol or revolver issued pursuant to subsection (a) of § 29-28 or valid eligibility certificate for a pistol or revolver issued pursuant to § 29-36f. The dealer may charge a fee for contacting the department on behalf of the prospective transferor or prospective transferee.

(2) The Department of Emergency Services and Public Protection shall make every effort, including performing the national instant criminal background check, to determine if the prospective transferee is eligible to receive such long gun. The Commissioner of Emergency Services and Public Protection shall immediately notify the dealer of the department’s determination and the dealer shall immediately notify the prospective transferor or prospective transferee of such determination. If the department determines the prospective transferee is ineligible to receive such long gun, no long gun shall be sold, delivered or otherwise transferred by the prospective transferor to the prospective transferee. If the department determines the prospective transferee is eligible to receive such long gun and provides an authorization number for such sale, delivery or transfer, the prospective transferor may proceed to sell, deliver or otherwise transfer the long gun to the prospective transferee.

(3) Upon the sale, delivery or other transfer of the long gun, the transferor or transferee shall complete a form, prescribed by the Commissioner of Emergency Services and Public Protection, that contains the name and address of the transferor, the name and address of the transferee, the date and place of birth of such transferee, the firearm permit or certificate number of the transferee, the firearm permit or certificate number of the transferor, if any, the date of such sale, delivery or transfer, the caliber, make, model and manufacturer’s number and a general description of such long gun and the authorization number provided by the department. Not later than twenty-four hours after such sale, delivery or transfer, the transferor shall send by first class mail or electronically transfer one copy of such form to the Commissioner of Emergency Services and Public Protection and one copy to the chief of police of the municipality in which the transferee resides or, where there is no chief of police, the chief executive officer of the municipality, as defined in § 7-148, in which the transferee resides or, if designated by such chief executive officer, the resident state trooper serving such municipality or a state police officer of the state police troop having jurisdiction over such municipality, and shall retain one copy, for at least five years.

(g) Prior to April 1, 2014, no sale, delivery or other transfer of any long gun shall be made until the expiration of two weeks from the date of the application, except that such waiting period shall not apply to any federal marshal, parole officer or peace officer, or to the sale, delivery or other transfer of (1) any long gun to a holder of a valid state permit to carry a pistol or revolver issued under the provisions of § 29-28, a valid eligibility certificate issued under the provisions of § 29-36f, or a valid long gun eligibility certificate issued under the provisions of § 29-37p, (2) any long gun to an active member of the armed forces of the United States or of any reserve component thereof, (3) any long gun to a holder of a valid hunting license issued pursuant to chapter 490, or (4) antique firearms. For the purposes of this subsection, “antique firearm” means any firearm which was manufactured in or before 1898 and any replica of such firearm, provided such replica is not designed or redesigned for using rimfire or conventional centerfire fixed ammunition except rimfire or conventional centerfire fixed ammunition which is no longer manufactured in the United States and not readily available in the ordinary channel of commercial trade.

(h) The provisions of subsections (c) to (g), inclusive of this section shall not apply to the sale, delivery or transfer of (1) long guns to (A) the Department of Emergency Services and Public Protection, police departments, the Department of Correction, the Division of Criminal Justice, the Department of Motor Vehicles, the Department of Energy and Environmental Protection or the military or naval forces of this state or of the United States, (B) a sworn and duly certified member of an organized police department, the Division of State Police within the Department of Emergency Services and Public Protection or the Department of Correction, a chief inspector or inspector in the Division of Criminal Justice, a salaried inspector of motor vehicles designated by the Commissioner of Motor Vehicles, a conservation officer or special conservation officer appointed by the Commissioner of Energy and Environmental Protection pursuant to § 26-5, or a constable who is certified by the Police Officer Standards and Training Council and appointed by the chief executive authority of a town, city or borough to perform criminal law enforcement duties, pursuant to a letter on the letterhead of such department, division, commissioner or authority authorizing the purchase and stating that the sworn member, inspector, officer or constable will use the long gun in the discharge of official duties, and that a records check indicates that the sworn member, inspector, officer or constable has not been convicted of a crime of family violence, for use by such sworn member, inspector, officer or constable in the discharge of such sworn member’s, inspector’s, officer’s or constable’s official duties or when off duty, (C) a member of the military or naval forces of this state or of the United States, or (D) a nuclear facility licensed by the United States Nuclear Regulatory Commission for the purpose of providing security services at such facility, or any contractor or subcontractor of such facility for the purpose of providing security services at such facility; (2) long guns to or between federally licensed firearm manufacturers, importers or dealers; (3) curios or relics, as defined in 27 C.F.R. § 478.11, to or between federally licensed firearm collectors; or (4) antique firearms, as defined in subsection (g) of this section.

(i) If the court finds that a violation of this section is not of a serious nature and that the person charged with such violation (1) will probably not offend in the future, (2) has not previously been convicted of a violation of this section, and (3) has not previously had a prosecution under this section suspended pursuant to this subsection, it may order suspension of prosecution. The court shall not order suspension of prosecution unless the accused person has acknowledged that he understands the consequences of the suspension of prosecution. Any person for whom prosecution is suspended shall agree to the tolling of any statute of limitations with respect to such violation and to a waiver of his right to a speedy trial. Such person shall appear in court and shall be released to the supervision of the Court Support Services Division for such period, not exceeding two years, and under such conditions as the court shall order. If the person refuses to accept, or, having accepted, violates such conditions, the court shall terminate the suspension of prosecution and the case shall be brought to trial. If such person satisfactorily completes his period of probation, he may apply for dismissal of the charges against him and the court, on finding such satisfactory completion, shall dismiss such charges. If the person does not apply for dismissal of the charges against him after satisfactorily completing his period of probation, the court, upon receipt of a report submitted by the Court Support Services Division that the person satisfactorily completed his period of probation, may on its own motion make a finding of such satisfactory completion and dismiss such charges. Upon dismissal, all records of such charges shall be erased pursuant to § 54-142a. An order of the court denying a motion to dismiss the charges against a person who has completed his period of probation or terminating the participation of a defendant in such program shall be a final judgment for purposes of appeal.

(j) Any person who violates any provision of this section shall be guilty of a class D felony, except that any person who sells, delivers or otherwise transfers a long gun in violation of the provisions of this section, knowing that such long gun is stolen or that the manufacturer’s number or other mark of identification on such long gun has been altered, removed or obliterated, shall be guilty of a class B felony, and any long gun found in the possession of any person in violation of any provision of this section shall be forfeited.