US Army, Technical Manual, TM 9-1290-347-34P, POST, AIMING: M1A2, (1290-535-7617), 1971
1. Scope.
This manual lists repair parts, special tools,
and support equipment required for the performance
of direct support, general support and
depot maintenance of the aiming post, M1A2.
Section I. Introduction
II. Repair parts list
Group 2444 Aiming post, M1A27687114
III. Special tools list
Group 2603 Aiming post, light M147197188
IV. Federal stock number and reference number index