The company's vice president, William Weimer, says the M-88s are legal to purchase by consumers because they have a limited amount of pyrotechnic composition and are not very strong.

CNN: By the CNN Wire Staff

William Weimer, a vice president at Phantom Fireworks, said none of the three products pictured in the latest criminal complaints came from his company's outlets, so it is likely the alleged bombers also purchased pyrotechnic devices from rivals' retail stores.

WSJ: Latest Boston Charges Point to Fireworks Link