Dan,
Sorry, forgot to say: the Type C barrel had a short counterweight at the muzzle, combined with either a mid-barrel counterweight or fume extractor. It was bored in the barrel for the gas ports, but not necessarily fitted with the fume extractor. If fitted with the mid-barrel counterweight, the gas ports were fitted with threaded plugs. The Type C was sort of a Type A and B all rolled into one.
Type A counterweight (muzzle), to be balanced, had an additional length added to the counterweight tube.
Mike C
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23-07-13, 03:04
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