Hi Rich, My figure of 7.65mm is based on actual measurement, using a Helios vernier caliper (a relic of my engineering school days). It represents the average, after discarding the highest and lowest, of a sample of 1 gun (I'm sorry, I only own one late war Erfurt). I do own several DWM's, and if I wasn't going out to a party tonight, there is nothing I would like better than to spend an evening field stripping them so that I could measure their toggles. Cheers, Norm
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