This is a head-harness for the General Service Respirator.
GSR Gas Mask Head Strap / Harness Ex British Army Issue (still27)
British Army Issue Avon GSR Respirator Gas Mask Spare Head Harness Straps
Scott Respirator Harness M-95 Gas Mask CBR NBC FRR GSR, Avon S10 FM12, Forsheda
C50 FM50 Avon Respirator Harness Gas Mask CBR NBC ABC S10 Scott FRR GSR Forsheda
Spare FRR GSR Respirator Harness & Optional Clip Set Gas Mask CBR NBC Avon Scott
Supergrade GSR Gas Mask FRR Strap Respirator Harness CBRN Headband + Clips
