Go to a Massachusetts RMV Service Center to register and title the vehicle, and bring the following documents:

• Applicable Fee
• Bill of Sale: Good to have
• Certificate of Title: The previous owner’s certificate of title is required, or the previous owner’s registration and bill of sale if the vehicle is exempt because of its age.
• Registration and Title Application: Must be completed, with a licensed Massachusetts insurance agent completing, stamping, and signing the application.

Notes

• If the previous title does not have a space for the sales price, a bill of sale showing the sales price must be submitted.
• You must obtain a vehicle inspection sticker within 7 days of the registration date.

Source: Massachusetts Registry of Motor Vehicles (Apply for a registration and title for a vehicle purchased from an individual)

Massachusetts requires motor-powered boats operated on public waterways to be registered. To obtain lawful registration, make a trip to a nearby Boat and Recreational Vehicle Registration and Titling Bureau office.

• Bill of Sale, including the seller’s name, address, and signature.
• Certificate of title, if the boat is 14 feet or longer and required to be titled.
• Hull Identification Number information, including a pencil tracing or accepted HIN verification when required.
• Manufacturer’s Statement of Origin, if the boat is new.
• Payment for registration/title fees.
• Proof of ownership, such as a previous title, registration, or ownership document.
• Proof of Massachusetts sales/use tax payment, or exemption documentation.
• Registration and Titling Application

Out-of-State Purchase

• Out-of-state title, signed over to the buyer, if the boat is 14 feet or longer or came from a title state.
• Out-of-state registration, if the boat was not titled.

The title application for a boat that must be titled should be made within 20 days of purchase.

Source: Massachusetts (Boat Registration)

A new gun owner must have a Massachusetts firearms license to lawfully possess a firearm.

Source: Massachusetts Gov (Record a private firearms sale or registration)