Section 32B. (a) Any person who knowingly or intentionally manufactures, distributes, dispenses, or possesses with intent to manufacture, distribute, or dispense a controlled substance in Class C of section thirty-one shall be imprisoned in state prison for not more than five years or in a jail or house of correction for not more than two and one-half years, or by a fine of not less than five hundred nor more than five thousand dollars, or both such fine and imprisonment.
(b) Any person convicted of violating this section after one or more prior convictions of manufacturing, distributing, dispensing or possessing with the intent to manufacture, distribute or dispense a controlled substance as defined by section thirty-one under this or any prior law of this jurisdiction or of any offense of any other jurisdiction, federal, state, or territorial, which is the same as or necessarily includes the elements of said offense shall be punished by a term of imprisonment in the state prison for not less than two and one-half nor more than ten years, or by imprisonment in a jail or house of correction for not less than 18 months nor more than two and one-half years. No sentence imposed under the provisions of this section shall be for less than a mandatory minimum term of imprisonment of 18 months and a fine of not less than one thousand nor more than ten thousand dollars may be imposed, but not in lieu of the mandatory minimum term of imprisonment, as established herein.
(c) Any person serving a mandatory minimum sentence for violating this section shall be eligible for parole after serving one-half of the maximum term of the sentence if the sentence is to the house of correction, except that such person shall not be eligible for parole upon a finding of any 1 of the following aggravating circumstances:
(i) the defendant used violence or threats of violence or possessed a firearm, rifle, shotgun, machine gun or a weapon described in paragraph (b) of section 10 of chapter 269, or induced another participant to do so, during the commission of the offense;
(ii) the defendant engaged in a course of conduct whereby he directed the activities of another who committed any felony in violation of chapter 94C; or
(iii) the offense was committed during the commission or attempted commission of a violation of section 32F or section 32K of chapter 94C.
A condition of such parole may be enhanced supervision; provided, however, that such enhanced supervision may, at the discretion of the parole board, include, but shall not be limited to, the wearing of a global positioning satellite tracking device or any comparable device, which shall be administered by the board at all times for the length of the parole.