NSN 1R-1680-017176758-P8, REF NR 181-009-126, QTY 10 EA, DELIVERY FOB ORIGIN. All contractual documents (i.e. contracts, purchase orders, task orders, delivery orders, and modifications) related to the instant procurement are considered to be issued by the Government when copies are either deposited in the mail, transmitted by facsimile, or sent by other electronic commerce methods, such as e-mail. The Government?s acceptance of the contractor?s proposal constitutes bilateral agreement to issue contractual documents as detailed herein.