You can go to a gun dealer in your area that you like let them punches it for you Usually you have to put 20% down and the weapon will be sent to the store and at that point they will perform the background check and complete the sale so you can take it home

Most of your local gun shop/ dealers are FFL licensed. Call each one to find out their FFL fee. Once you have it, add or attach the name address and number to the order. Order you item, when it arrives at your local FFL. Have the stated fee plus State ID for background check. Go home with your purchase. Enjoy your purchase!

Find a local FFL dealer in your state and contact them. Arrange for the order/purchase to be made. The firearm will be delivered to them along with tracking numbers and insurance. Then go to the dealer and do the required local/state and Federal paperwork and background check. Pay the agreed upon price for the purchase and when permitted, take the firearm home with you. Most dealers will explain the process to you!

You must have it sent to an FFL for the transfer. Massachusetts has a series of restrictions. Attached a link: https://statelaws.findlaw.com/massachusetts-law/massachusetts-gun-control-laws.html
Have a good day

Have a friend or relative in another are to order the gun, where it is legal to ship. Then go pick it up.
Thanks for the question!
don c.