There was a bit of a sequel too....... Well into the L85/SA80 era, I was given a somewhat large collection of brand new L1A1 spare parts to go through to keep and/or dispose of accordingly. Tucked inside was a 1969 sealed green plastic ordnance issue bag of, probably, 2,000 of said SCREW, locking, foresight that were in such short supply for so long!