Any registrant who has attained the age of 17 years, who has not attained the age of 26 years, and who has not completed his active duty obligation under the Military Selective Service Act, when inductions are authorized, may volunteer for induction into the Armed Forces unless he;

(a) Is classified in Class 4-F or is eligible for Class 4-F; or

(b) Has been found temporarily unacceptable with reexamination believed justified (RBJ) and the period of time specified for his return for examination has not been terminated and the basis for his temporary rejection continues to exist; or

(c) Is an alien who has not resided in the United States for a period of at least one year; or

(d) Has not attained the age of 18 years and does not have the consent of his parent or guardian for his induction.

(a) If a person who is required to be registered but who has failed to register volunteers for induction, he shall be registered.

(b) In registering a volunteer, the area office shall follow the procedure set forth in § 1615.3 of this chapter.

When a registrant who is eligible to volunteer files an Application for Voluntary Induction, he shall be classified in Class 1-A and processed for induction.