Yep SIN - that's a gun.
Seems you and I define legal authority differently. What I was looking for was citation to some portion of Belize law that specifically either includes or excludes Tasers from categorization as firearms. I can't locate any.
In the U.S., the Govt. Accountability Ofc. notes the discrepancy in defination present at state and federal level:
"In reviewing various laws, including statutes, regulations, and ordinances, we found that Tasers were addressed in some federal, state, and local jurisdictions. We also found that these jurisdictions had different requirements for regulating Tasers. In some instances, the extent to which Tasers are regulated in these jurisdictions may depend on whether the Taser is classified as a firearm."