"I can check the lists when I get home.

It has the wrong spacer. I am sure that you noticed all the white plastic spacers that we saw. [on a June research trip to CMPicon to examine 1800 Navy 7.62 conversions, article in the next GCAicon Journal]

When the Navy had them, shooters that won Grade B rifles would bring them to the van to have a set of half minute sights installed."