Speaking of and ex-leo stand point.
there are some citys and towns that have ordenaces about using any weapon in the limets of the town.
they include guns,bows,xbows,air guns,and blowguns.
depending on how the statued is writen the use of slingshots and paint ball guns may all so be banned.

Know for your frind you said a" hand written statment"
whos hand? did the wrighting?
if i recived a citation i would want to see the law not a hand written pice of papper.

i would call the local shierffs dep. town councle and county commisniors to see what they say.

if infact there is a law agenst it there is no recource but if there is no law on the books i would fight it in court myself.

you also have to rember there are differince in each town here one town you can not leagle use a bow in town the naboring town allows you to deer hunt in town with a bow.

its realy up to the town