Which of the following best describes Level 111A body armor?

Level IIIA body armor is designed to provide protection against specific types of firearms, particularly those that are more powerful than typical handguns. It is rated to protect against most handgun rounds, including those from submachine guns, up to a .44 Magnum. This level of armor is often utilized by law enforcement and security personnel who may face a variety of firearm threats.

While it does offer significant protection, it is not designed to stop rifle rounds or full-on assault rifles, which are generally addressed by higher levels of body armor, such as Level III or IV. Therefore, the option that mentions protection against .44+ submachine guns accurately describes the capabilities of Level IIIA body armor. This distinguishes it from options focused on protection from full assault rifles or indicating heavy-duty use, which are not the primary focus of this specific armor classification.