I have heard rumor that after a certain SN the following M10s manufactured were all 2 3/4". However 1) I don't know if that is a fact, and 2) the SN listed as a cut-off differs, depending on the source (I have read 'after 69xxx', and I have read 'after 89xxx').
What say you, oh Wise Ones of the Remington Society?
Many thanks in advance.
Dan