Correct. This shotgun is 2-3/4. Almost all 12 ga auto-5s were 2 3/4 except for a few made for the world market and they are marked 65mm which equates to 2-9/16. The early 16s were all 2-9/16<>
’’12-70’’ likely means 12GA, 2-3/4’’.
70mm = 2.755’’
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