What is the advantage of the Heavy CAR buffer being sold by BUSHMASTER? it is more expensive by 60% than the regular CAR buffer. What advantage will it offer and it is needed in a 14.5" full auto M16?

In full auto it should slow the cyclic rate a bit softening recoil and giving more forward force to chamber a round,I have a semi auto and thats why I got it more forward force for more positive lock up and it dampens the stress on operating parts because carbines operate a little harder and on higher pressure and its only 10 bucks more than a standard buffer I hear there are even heavier ones for fullauto capable rifles.So I would say more positive feeding and less violent extraction.