FM 7-100 Opposing Force Doctrinal Framework and Strategy (есть)
FM 7-100.1, Opposing Force Operations.
FM 7-100.2, Opposing Force Tactics.
FM 7-100.3, Opposing Force: Paramilitary and Nonmilitary Organizations and Tactics.
FM 7-100.4, Opposing Force Small Unit Tactics.
FM 7-100.5, Opposing Force Organization Guide. (есть, но под номером 7-100.4)
FM 7-100.6, Opposing Force: Worldwide Equipment Guide.

FM 100-60 Armor- and Mechanized-Based Opposing Force: Organization Guide (есть)
FM 100-61 Armor- and Mechanized-Based Opposing Force Operational Art (нет, но доступен онлайн, впрочем pdf был бы лучше)
FM 100-62 Armor- and Mechanized-Based Opposing Force: Tactics
FM 100-63 Infantry-Based Opposing Force: Organization Guide (нашёл в pdf)
FM 100-64 Infantry-Based Opposing Force: Operations and Tactics
FM 100-65 Capabilities-Based Opposing Force: Worldwide Equipment Guide
FM 100-66 Opposing Forces in Stability and Support Operations

ST 100-7 OPFOR Battle Book (есть)
OPFOR Worldwide Equipment Guide (есть, не путать с FM 100-65)

А в AR 350-2 "OPFOR Program" от 2004-го написано следующее:

The FM 7-100 series consists of—
(1) FM 7-100, Opposing Force Doctrinal Framework and Strategy.
(2) FM 7-100.1, Opposing Force Operations.
(3) FM 7-100.2, Opposing Force Tactics.
(4) FM 7-100.3, Opposing Force: Paramilitary and Nonmilitary Organizations and Tactics.
(5) FM 7-100.4, Opposing Force Small Unit Tactics.
(6) FM 7-100.5, Opposing Force Organization Guide.
(7) FM 7-100.6, Opposing Force: Worldwide Equipment Guide.

Странно. Это позже они поменяли что ли порядок...

UPDATE

Нашёл 100-63 в pdf.