Indiana Code Title 35. Criminal Law and Procedure § 35-31.5-2-190

(1) shoots;

(2) is designed to shoot;  or

(3) can be readily restored to shoot;

(1) the frame or receiver of a weapon described in subsection (a);

(2) a:

for use in converting a weapon into a machine gun;  and

(3) any combination of parts from which a machine gun can be assembled if such parts are in the possession or under the control of a person.