USGI M42 M45 Protective Mask Medium w/ Filter Hose Hood & Bag NOS. Description: Genuine USGI M42/M45 Protective Mask, size Medium. New Old Stock (NOS) – never issued or used. Includes all items shown in photos. Brand: USGI / U. Military Issue. Model: M42 / M45 Protective Mask. Size: Medium. Condition: New Old Stock (unused, may show light storage wear). Color: Black. Includes: Mask, filter, hose, adapter, hood, and carry bag (as pictured) NO MICROPHONE. Use: Collectible, training, or display. Authentic U. All components pictured are included. Excellent condition and perfect for collectors or those seeking a complete U. Military protective mask set. Keywords: M42 mask, M45 mask, USGI protective mask, military gas mask, surplus gear, protective equipment, respirator mask, US Army issue, complete mask set, New Old Stock.