The opportunity is for a one-time firm-fixed-price definite-quantity purchase of AN/PVS-20 Light Interference Filters (NSN 5855-01-611-2113, P/N OFM-2021-A1), with 513 EA and a planning BEQ total of 2,414 that may vary. First Article Testing is required unless waived by CECOM, and the limited TDP is ITAR-restricted, requiring JCP registration and SECRET facility clearance/safeguarding for access. Place of contract performance is Aberdeen Proving Ground, MD, and anticipated hardware ship-to is DLA Distribution DDSP New Cumberland, PA. Pricing must include FOB destination, packaging, and labeling, with early and incremental deliveries encouraged at no extra cost to the Government. Offerors should monitor sam.gov for amendments and submit offers by email to the listed points of contact; the notice is an estimate only and not a solicitation.