Hopefully it will help your developent a little

weaponIsShotGun(CurrentWeapon)
{

if(CurrentWeapon == "ithaca_zm" || CurrentWeapon == "spas_zm" || 
   CurrentWeapon == "rottweil72_zm" || CurrentWeapon == "hs10_zm")
   {
	return true;
   }

if(CurrentWeapon == "ithaca_upgraded_zm" || CurrentWeapon == "spas_upgraded_zm" || 
   CurrentWeapon == "rottweil72_upgraded_zm" || CurrentWeapon == "hs10_upgraded_zm")
   {
	return true;
   }

return false;
}