Our current LRIP solicitation consist of FPIF (primary) and various other contract types (i.e. FFP and CPFF). If it's required to use only PBP or progress payments to finance an LRIP program please provide supporting documentation.
After researching the FAR, DFARS and Class Deviations as well as asking another professor, I could not find any guidance requiring the use of either Performance Based Payments or Progress Payments for an LRIP program. If there is one, it would likely be at the Service or Command level. Recommend contacting PK policy at your command level to see if they know of any such guidance.