This Request for Proposal (RFP) will result in a single Firm Fixed Price (FFP) award to procure Initiator Delay, Cartridge Actuator Initiator, JL56 and JL57. The applicable NSN and Part Numbers are as follows:NSN: 1377-01-723-6642 Part Number: 855330-06NSN: 1377-01-723-6646 Part Number: 855330-01This RFP is restricted to one or a limited number of responsible sources, as authorized by 10 U.S.C. 3204(a)(1) and Federal Acquisition Regulation (FAR) Revolutionary FAR Overhaul (RFO) 6.103-1(b). To be eligible for award, the Offeror must submit a valid Qualification Acceptance Letter, or Government approved equivalent, signed by an authorized Government engineer verifying their status as a qualified source for this requirement.