"large capacity weapons and feeding devices and ammunition."
not ambiguous at all, it uses words with definitions.
a firearm can be "large capacity" if it's capable of accepting a large capacity feeding device, large cap weapons aren't outlawed (yet) but LCFD are, so a glock 19 is a LC weapons, but a 10-round mag is not a LCFD.
interestingly, LCFD is defined, but i couldn't find a definition for just "feeding device"
Section 121. As used in sections 122 to 131Y, inclusive, the following words shall, unless the context clearly requires otherwise, have the following meanings:—
''Ammunition'', cartridges or cartridge cases, primers (igniter), bullets or propellant powder designed for use in any firearm, rifle or shotgun. The term ''ammunition'' shall also mean tear gas cartridges.
''Large capacity weapon'', any firearm, rifle or shotgun: (i) that is semiautomatic with a fixed large capacity feeding device; (ii) that is semiautomatic and capable of accepting, or readily modifiable to accept, any detachable large capacity feeding device; (iii) that employs a rotating cylinder capable of accepting more than ten rounds of ammunition in a rifle or firearm and more than five shotgun shells in the case of a shotgun or firearm; or (iv) that is an assault weapon. The term ''large capacity weapon'' shall be a secondary designation and shall apply to a weapon in addition to its primary designation as a firearm, rifle or shotgun and shall not include: (i) any weapon that was manufactured in or prior to the year 1899; (ii) any weapon that operates by manual bolt, pump, lever or slide action; (iii) any weapon that is a single-shot weapon; (iv) any weapon that has been modified so as to render it permanently inoperable or otherwise rendered permanently unable to be designated a large capacity weapon; or (v) any weapon that is an antique or relic, theatrical prop or other weapon that is not capable of firing a projectile and which is not intended for use as a functional weapon and cannot be readily modified through a combination of available parts into an operable large capacity weapon.