Mass. Gen. Laws ch. 33 § 4A
The National Lancers shall be organized as the commander-in-chief directs and may retain their name and the right to wear distinctive uniforms; provided, however, that such uniforms shall be approved by the commander-in-chief. The National Lancers may retain their methods of selecting their officers and conducting their internal affairs consistent with the laws of the commonwealth and the laws of the United States. The National Lancers may use land and stable facilities belonging to the commonwealth for their activities, equipment and exercises, without charge, and may receive from the commonwealth, its departments, divisions or bureaus or the federal government, without charge, any surplus equipment, goods or other materials, as are available, provided that such equipment, goods and materials shall remain the property of the commonwealth and shall be accounted for as such.
Mass. Gen. Laws ch. 33, § 4A