Mass. Gen. Laws ch. 140 § 123
A license granted under section one hundred and twenty-two shall be expressed to be and shall be subject to the following conditions:
First, That the provisions in regard to the nature of the license and the building in which the business may be carried on under it shall be strictly adhered to.
Second, That every licensee shall, before delivery of a firearm, rifle or shotgun, make or cause to be made a true, legible entry in a sales record book to be furnished by the commissioner of the department of criminal justice information services and to be kept for that purpose, specifying the complete description of the firearm, rifle or shotgun, including the make, serial number, if any, type of firearm, rifle or shotgun, and designation as a large capacity weapon, if applicable, whether sold, rented or leased, the date of each sale, rental or lease, the license to carry firearms number or permit to purchase number and the identification card number in the case of a firearm or the identification card number or the license to carry firearms number in the case of a rifle or shotgun, the sex, residence and occupation of the purchaser, renter or lessee, and shall before delivery, as aforesaid, require the purchaser, renter or lessee personally to write in said sales record book his full name. Said book shall be open at all times to the inspection of the police.
Third, That the license or a copy thereof, certified by the official issuing the same, shall be displayed on the premises in a position where it can easily be read.
Fourth, That no firearm, rifle or shotgun, or machine gun shall be displayed in any outer window of said premises or in any other place where it can readily be seen from the outside.
Fifth, That the licensee shall submit a record of all sales, rentals and leases forthwith at the time of such sale, rental or lease via electronic communication link to the commissioner of the department of criminal justice information services.
Sixth, That every firearm, rifle or shotgun shall be unloaded when delivered.
Seventh, That no delivery of a firearm shall be made to any person not having a license to carry firearms issued under the provisions of section one hundred and thirty-one nor shall any delivery of a rifle or shotgun or ammunition be made to any minor nor to any person not having a license to carry firearms issued under the provisions of section one hundred and thirty-one or a firearm identification card issued under the provisions of section one hundred and twenty-nine B nor shall any large capacity firearm or large capacity feeding device therefor be delivered to any person not having a license to carry firearms issued under section 131 nor shall any large capacity rifle or shotgun or large capacity feeding device therefor be delivered to any person not having a license to carry firearms issued under said section 131; provided, however, that delivery of a firearm by a licensee to a person possessing a valid permit to purchase said firearm issued under the provisions of section one hundred and thirty-one A and a valid firearm identification card issued under section one hundred and twenty-nine B may be made by the licensee to the purchaser's residence or place of business, subject to the restrictions imposed upon such permits as provided under section 131A.
Eighth, That no firearm shall be sold, rented or leased to a minor or a person who has not a permit then in force to purchase, rent or lease the same issued under section one hundred and thirty-one A, and a firearm identification card issued under the provisions of section one hundred and twenty-nine B, or unless such person has a license to carry firearms issued under the provisions of section one hundred and thirty-one; nor shall any rifle or shotgun be sold, rented or leased to a person who has not a valid firearm identification card as provided for in section one hundred and twenty-nine B, or has a license to carry firearms as provided in section one hundred and thirty-one; that no large capacity firearm nor large capacity feeding device therefor shall be sold, rented, leased or transferred to any person not having
Ninth, That upon the sale, rental or lease of a firearm, subject to a permit to purchase issued under the provisions of section one hundred and thirty-one A, the licensee under section one hundred and twenty-two shall take up such permit to purchase and shall endorse upon it the date and place of said sale, rental or lease, and shall transmit the same to the executive director of the criminal history systems board [commissioner of the department of criminal justice information services]; and that upon the sale, rental or lease of a machine gun shall endorse upon the license to possess the same the date and place of said sale, rental or lease, and shall within seven days transmit a notice thereof to said executive director [commissioner]. In case of a sale under the provisions of section one hundred and thirty-one E the licensee under section one hundred and twenty-two shall write in the sales record book the number of the license to carry firearms issued the purchaser under the provisions of section one hundred and thirty-one, or the number of the firearm identification card issued the purchaser under the provisions of section one hundred and twenty-nine B, whichever is applicable under the provisions of condition Eighth of this section.
Tenth, That this license shall be subject to forfeiture as provided in section one hundred and twenty-five for breach of any of its conditions, and that, if the licensee hereunder is convicted of a violation of any such conditions, this license shall thereupon become void.
Eleventh, That the second, fifth, eighth and ninth conditions shall not apply to a gunsmith with regard to repair or remodeling or servicing of firearms, rifles or shotguns unless said gunsmith has manufactured a firearm, rifle or shotgun for the purchaser, but said gunsmith shall keep records of the work done by him together with the names and addresses of his customers. Such records shall be kept open for inspection by the police at all times.
Twelfth, That any licensee shall keep records of each sale, rental or lease of a rifle or shotgun, specifying the description of said rifle or shotgun, together with the name and address of the purchaser, renter or lessee, and the date of such transaction.
Thirteenth, That the current validity of any firearm identification card, license to carry firearms or permit to purchase, rent or lease firearms presented, and that the person presenting said card, license or permit is the lawful holder thereof, shall be verified by the licensee prior to any sale, rental or lease of a rifle, shotgun, firearm or large capacity feeding device; and, upon being presented with such card or license that is expired, suspended or revoked, the licensee shall notify the licensing authority of the presentment of such expired, suspended or revoked card, license or permit; and further, the licensee may take possession of such card or license provided that, in such case, such licensee shall:
Fourteenth, That the licensee shall conspicuously post at each purchase counter the following warning in bold type not less than one inch in height: "IT IS UNLAWFUL TO STORE OR KEEP A FIREARM, RIFLE, SHOTGUN OR MACHINE GUN IN ANY PLACE UNLESS THAT WEAPON IS EQUIPPED WITH A TAMPER-RESISTANT SAFETY DEVICE OR IS STORED OR KEPT IN A SECURELY LOCKED CONTAINER.", and that such licensee shall provide said warning, in writing, to the purchaser or transferee of any firearm, rifle, shotgun or machine gun in bold type not less than one-quarter inch in height, and further that the licensee shall conspicuously post and distribute at each purchase counter a notice providing information on suicide prevention developed and provided by the division on violence and injury prevention within the department of public health. The department of public health shall develop and make available on its website for download a sign providing the information on suicide prevention.
Fifteenth, That all licensees shall maintain a permanent place of business that is not a residence or dwelling wherein all transactions described in this section shall be conducted and wherein all records required to be kept under this section shall be so kept.
Sixteenth, That no licensee shall sell, lease, rent, transfer or deliver or offer for sale, lease, rent, transfer or delivery to any person any assault weapon or large capacity feeding device that was not otherwise lawfully possessed on September 13, 1994.
Seventeenth, That any licensee from whom a rifle, shotgun, firearm or machine gun is lost or stolen shall report such loss or theft to the licensing authority and the executive director of the criminal history systems board forthwith. Such report shall include a complete description of the weapon, including the make, model, serial number and caliber and whether such weapon is a large capacity weapon.
Eighteenth, That no licensee shall sell, rent, lease, transfer or deliver or offer for sale, lease, transfer or delivery any firearm, to any purchaser in the commonwealth unless such sale is to a business entity that is primarily a firearm wholesaler and the sale, by its terms, prohibits the purchaser from reselling such firearm to a firearm retailer or consumer in the commonwealth if such firearm has a frame, barrel, cylinder, slide or breechblock that is composed of:
Nineteenth, That no licensee shall sell, rent, lease, transfer or deliver or offer for sale, lease, transfer or delivery any firearm to any purchaser in the commonwealth unless such sale is to a business entity that is primarily a firearms wholesaler, and the sale, by its terms, prohibits such purchaser from reselling such firearm to a firearm retailer or consumer in the commonwealth if such firearm is prone to accidental discharge which, for purposes of this clause, shall mean any make and model of firearm for which a sample of five firearms in new condition all undergo, and none discharge during, the following test: Each of the five sample firearms shall be:
Twentieth, That no licensee shall sell, rent, lease, transfer or deliver or offer for sale, lease, transfer or delivery, any firearm to any purchaser in the commonwealth unless such sale is to a business entity that is primarily a firearm wholesaler, and the sale, by its terms, prohibits the purchaser from reselling such firearm to a firearm retailer or consumer in the commonwealth if such firearm is prone to:
Twenty-first, That no licensee shall sell, rent, lease, transfer or deliver or offer for sale, lease, transfer or delivery any firearm to any purchaser in the commonwealth unless such sale is to a business entity that is primarily a firearm wholesaler and the sale, by its terms, prohibits the purchaser from reselling such firearm to a firearm retailer or consumer in the commonwealth if such firearm has a barrel less than three inches in length, unless the licensee discloses in writing, prior to the transaction, to the prospective buyer, lessee, deliveree or transferee the limitations of the accuracy of the particular make and model of the subject firearm, by disclosing the make and model's average group diameter test result at seven yards, average group diameter test result at 14 yards and average group diameter test result at 21 yards. For purposes of this clause, "average group diameter test result" shall mean the arithmetic mean of three separate trials, each performed as follows on a different sample firearm in new condition of the make and model at issue. Each firearm shall fire five rounds at a target from a set distance and the largest spread in inches between the centers of any of the holes made in a test target shall be measured and recorded. This procedure shall be repeated two more times on the firearm. The arithmetic mean of each of the three recorded results shall be deemed the result of the trial for that particular sample firearm. The ammunition used shall be the type recommended by the firearm manufacturer in its user manual or, if none is recommended, any standard ammunition of the correct caliber in new condition. No licensee shall sell any rifle or shotgun, contrary to the provisions of section one hundred and thirty or section 131E.
Clauses Eighteenth to Twenty-first, inclusive, of the first paragraph shall not apply to:
No person licensed under the provisions of section 122 or section 122B shall sell, rent, lease, transfer or deliver any rifle, shotgun or firearm or ammunition or ammunition feeding device contrary to the provisions of section 130 or section 131E; and no such licensee shall sell, rent, lease, transfer or deliver any rifle, shotgun or firearm or ammunition or ammunition feeding device to any person who does not have in his possession the required firearm identification card or proof of exemption therefrom, license to carry firearms or permit to purchase, rent or lease firearms and who does not present such card, proof, license or permit to the licensee in person at the time of purchase, rental or lease. No person licensed under the provisions of section 122 or section 122B shall fill an order for such weapon, ammunition or ammunition feeding device that was received by mail, facsimile, telephone or other telecommunication unless such transaction or transfer includes the in-person presentation of the required card, proof, license or permit as required herein prior to any sale, delivery or any form of transfer of possession of the subject weapon, ammunition or ammunition feeding device. Transactions between persons licensed under section 122 or between federally licensed dealers shall be exempt from the provisions of this paragraph.
The licensing authority shall enter, one time per calendar year, during regular business hours, the commercial premises owned or leased by any licensee, wherein such records required to be maintained under this section are stored or maintained, and inspect, in a reasonable manner, such records and inventory for the purpose of enforcing the provisions of this section. If such records and inventory contain evidence of violations of this section, the inspecting officer shall produce and take possession of copies of such records and, in the event that the licensee subject to inspection does not possess copying equipment, the inspecting officer shall arrange to have copied, in a reasonable time and manner, such records that contain evidence of such violations and the costs for such copying shall be assessed against the owner of such records. Licensees found to be in violation of this section shall be subject to the suspension or permanent revocation of such license issued under section 122 and to the provisions of section 128. Nothing herein shall prohibit the licensing authority or the department of state police from conducting such inspections pursuant to a valid search warrant issued by a court of competent jurisdiction.
Notwithstanding the provisions of this section, a person licensed under the provisions of section one hundred and twenty-two, or section one hundred and twenty-two B, may sell or transfer firearms, rifles, shotguns, machine guns or ammunition at any regular meeting of an incorporated collectors club or at a gun show open to the general public; provided, however, that all other provisions of this section are complied with and that such sale or transfer is in conformity with federal law or regulations applicable to the transfer or sale of firearms, rifles, shotguns, machine guns or ammunition, including the restrictions imposed upon firearm identification cards issued under section 129B, licenses to carry firearms issued under section 131 and permits to purchase, lease or rent firearms issued under section 131A.
Mass. Gen. Laws ch. 140, § 123