As authorized by 10 U.S.C. 2306b(h) and subject to the conditions in 217.172(e), the head of the agency may enter into a multiyear contract for
(a) A weapon system and associated items, services, and logistics support for a weapon system; and
(b) Advance procurement of components, parts, and materials necessary to manufacture a weapon system, including advance procurement to achieve economic lot purchases or more efficient production rates (see 217.174 regarding economic order quantity procurement).
