Something I have been curious about for years but have never found an answer to beyond mere unsupported deduction. It concerns the prefix 'L' on Small Arms and other weapon and ammunition natures. 'L1A1', 'L2A1', 'L2A2' etc. I can only deduce that these are measurements of lethality accorded to the varying weapon/ammunition natures but I have never been able to obtain a table or any explanation as to their meaning. Any experts out there that could enlighten me?