Glad someone asked that question and got it answered already. I was beginning to wonder and getting ready to do the whole internet search thing.
Just like I already did for the strain screw on a revolver.
Lithgow Arms LA101 CrossOver: First civilian firearm mass-produced in Australia in over four decades - [image: TFB LA101]Australia’s famous Lithgow factory, which originally opened during the first world war to produce Enfield rifles for British Commonwealth...
56 minutes ago