There are two mask variants: the M50 (ground and shipboard use) and M51 (ground vehicle use). The U.S. Army Soldier Systems Center’s (SSC) publication, The Warrior, Joint Program Executive Office for Chemical and Biological Defense, DTRA Chemical and Biological Technologies Department. The outlet valve cover is dark gray in color and the design of the cover provides a direct speech capability. M50 The facepiece is designed with an inverted peripheral face seal and an integrated chin cup. The M50 series mask accepts the twin M61 filters; a specially designed low profile filter that improves the service member's ability to interact with equipment such as a shoulder-fired rifle or night vision goggles. Unable to add item to List. When adjusted properly, they will secure the facepiece assembly to the wearer's face creating an airtight seal. In a throwback to the M17 series mask, the filters are mounted to either side of the mask to provide an evenly weighted balance to reduce the wearer's fatigue of the neck and upper back muscles. Expired filter elements should be changed immediately in an operational environment, but they still may be used for training purposes in low-risk mask confidence exercises (CS chamber). The M50/M51 masks replace the M40 and M42, MCU2/P series masks and the M45 in the Land Warrior Program. XM50 with the clear silicone rubber nose cup assembly and bright orange internal valves. Additionally, economies of scale could significantly lower costs if all armed service could use the same mask system instead of having many models spread out among the services. Preceded by The mask was designed to incorporate state-of-the-art technologies to protect US and allied forces from current and anticipated CBRN threats. Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the Amazon community. Combination SCBA and PAPR. The M61 substitutes a non-toxic zinc-based formulation to counteract cyanogen chloride and hydrogen cyanide gas (NATO designation CK and AC respectively). US Army US Marine Corps US Air Force US Navy Improve drinking system for easier use and greater flow of liquids. CCBA (Closed Circuit Breathing Apparatus). Unfortunately, these get thrown away. The M61 filters contain activated carbon media and a high-efficiency particulate filter. The production M50 mask had a black nose cup and valves. There are three black colored inlet/outlet disk valves contained in the facepiece assembly: One is located between the outlet valve cover assembly and the front module main body assembly.  The production M50 mask has a black rubber nose cup and black internal valves. The additional filter simply clips onto the current M61 filter and provides an extra layer of protection for specific threats. Gas Mask Audio Communications Devices, VPUs, NBC & CBRN Suits PPE (Personal Protective Equipment), Avon M50 / FM50 Self-Sealing Disc Valve Set, NEW, Avon M50 Series Chemical Protective Hood (Factory), Avon M50 Series Twin Pack Connical Filters, New Old Stock, Avon Protection Sunlight Tinted Lens Outsert P/N: 70501-157, Avon Protection BlueBlocker Lens Outsert P/N: 70501-158, Avon Protection Mirror Lens Outsert P/N: 71014-14, Avon Protection Shade 5 Breach Lens P/N: 70501-688, Avon Protection Green Laser Lens Outsert P/N: 72601-29, AVON M50/ FM50 Gas Mask: Quick Doff Hood (Not Avon but compatible), AVON M50/ FM50 Gas Mask: Camelbak gas mask conversion kit, AVON M50/ FM50 Gas Mask: Camelbak Type-A Adapter, Avon M50 Series Gas Mask Carrier, Sage Green, RARE! The M50 and M51, officially the Joint Service General Protective Mask (JSGPM) is a lightweight, protective mask system consisting of the mask, a mask carrier, and additional accessories. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. Please try your search again later. The mask features a variable resistance exhalation unit (activated with a simple twist of the outlet valve assembly) that allows for the following modes of operation depending on the specific mission: This protective mask was developed to counter the multiple threats encountered on the modern battlefield, war on terrorism and peacekeeping operations around the world.