Original issue, US Army Technical Manual, 96 pages, size is 4" x 5 3/4", stapled, dated 28 May 1981.  This is not a commercial copy or print but an original issue government print issued in 1981 and republished in 1989.  This publication is titled - TM 11-5855-261-10, Operator's Manual for Infrared Aiming Light AN/PAQ-4.  .  Manual provides complete information and instructions for the use and operation of the Infrared Aiming Light.  Very well illustrated using clear and detailed line drawings.