Well it would depend upon the design. For example, though not a handgun, the M16A2 had either semi-auto or 3-shot burst; it's auto sear was designed to fire no more than a three shot burst period with no full auto capability.
Any or all. A handgun can fire semi, burst or full, depending on the mechanism. If it has a burst cam in it, then it will fire full auto only unless it has a burst interrupter.bookwriter said:If a handgun fired semi-auto and three round burst, would it have to also fire full-auto, or could semi adn 3 be the only modes?