Specifications include, but are not limited to: Contractor must provide specified APR’s, accessories and supplies and other related as needed equipment, parts, accessories and consumables. All gas masks provided pursuant to this contract combine high performance, customized fit and maximum comfort.All masks must include a one-piece, flexible lens that allows for a wide field of vision.All masks must include internal nose cup to prevent fogging.All masks must have or be adaptable to have a dual canister mount (NATO 40mm thread) that allow weapon sighting from either shoulder.All masks must be CBRN (Chemical, Biological, Radiological and Nuclear) compliant as determined by the National Institute for Occupational Safety and Health (NIOSH). All masks must contain at minimum a standard mechanical speaking diaphragm. Contractor must provide applicable cartridges and filters for protection against the following agents: OC riot control agent, HCN, GA, GB, GD, VX, CN, CS, Mustard and Lewisite. All filters and cartridges provided must have a minimum five (5) year shelf life with a one (1) year warranty. All masks must have minimum two (2) year warranty. MSA Millennium Facepiece Specifications:Must include fully elastic 6-point head harness that allows for easy donning, adjustment and removal with no hair pulling. Must include drinking tube to allow for fluid ingestion in contaminated atmospheres.Must include a clear polycarbonate lens outsert. MSA Ultra Elite Facepiece Specifications: Must include Hycar rubber 5-point head harness that allows for easy donning