"Dimensioning and tolerancing per ANS I14.5-1973; Color laser protection; scratches, digs or inclusions visible in the critical vision area that remain visible when the coated blank is held at the wearing distance from the eye shall be cause for rejection; MIL-F-13926 and MIL-0-13830 apply; When mounted on an integrated helmet unit iaw TM9-1270-233-23 and P, the visor spring assembly shall be capable of the following: it shall move throughout its full range of travel without binding from the visor down position, the visor shall move to the stow position under spring action when stowing knob is released, provide protection from projectiles iaw MIL-V-43511B par 3.4.9, provide 2 notch laser protection iaw DWG 10063037-103 note 7"