MIL-B-51170F (AMENDMENT-1), MILITARY SPECIFICATION: BAG, WATERPROOF, CHEMICAL--BIOLOGICAL MASK, M1 (18-AUG-1986) [S/S BY MIL-DTL-51170G]

MIL-B-51170F (AMENDMENT-1), MILITARY SPECIFICATION: BAG, WATERPROOF, CHEMICAL--BIOLOGICAL MASK, M1 (18-AUG-1986) [S/S BY MIL-DTL-51170G]., Reactivated after 29 Nov 2005 and may be used for new and existing designs and acquisitions.