The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the procurement of three units of a flight-critical linear actuator piston, identified by NSN 7R-1650-016879066-CB and reference number 2012H-4. The acquisition requires government source approval prior to contract award, as the technical data available does not support full and open competition, necessitating that only previously approved sources be solicited. Interested vendors must submit comprehensive documentation as outlined in the NAVSUP Source Approval Information Brochures, and proposals must be submitted within 45 days of this notice. For further inquiries, Alyssa T. Thieu can be contacted at (215) 697-0169 or via email at ALYSSA.THIEU@NAVY.MIL.