From Bearing Arms:

GOAL has spotted another major issue for both gun owners and gun sellers; new requirements for transporting firearms from distributors to FFLs. According to its analysis of HD 4420, Section 57 of the bill would require common carrier employees to possess a license to carry firearms in the Commonwealth in order to transport firearms, feeding devices, barrels, frames, receivers and ammunition. GOAL warns that every employee in a common carrier facility like UPS or FedEx could have to possess a license to carry in order to comply with the law, while their facilities would have to have a storage area that meets the new definitions of the “safe storage” provisions. GOAL warns that this “would essentially mean that interstate and intrastate commerce of lawful products would cease” and would lead to gun shops shutting down in short order, “leaving no legal means of obtaining products in Massachusetts.”