Avon M50 Gas Mask Small w/ Filters & Carrying Bag Case Respirator. Description: Avon M50 protective gas mask, size small, includes filters and carrying bag. Brand: Avon Protection. Model: M50. Size: Small. Color: Black. Includes: M50 mask, two filters (installed), carrying bag/case. Condition: Gently used with some marks and scuffs to the lenses. Marks inside the mask, see photos. Dual filter system for reduced breathing resistance. Clear wide-view lens for optimal visibility. Adjustable straps for secure and comfortable fit. Keywords: Avon M50, gas mask, respirator, mask, protection, military mask, small size, Avon Protection, M50 filters, tactical gear, survival equipment.