WRA operating rod, "R"?

I can find no "W" inside this WRA operating slide box..circular machining marks are unmolested..there is an "R" on the rail..again this is 1108196, no "W" on hammer..anyone else have a letter on rail?
https://www.milsurps.com/images/impo...g?t=1295288211
https://www.milsurps.com/images/impo...g?t=1295288211
https://www.milsurps.com/images/impo...g?t=1295288478
https://www.milsurps.com/images/impo...g?t=1295288478
https://www.milsurps.com/images/impo...95288580-1.jpg
Note punch mark
https://www.milsurps.com/images/impo...95288651-1.jpg
Spring tube, bull nose hand guard,
https://www.milsurps.com/images/impo...95288761-1.jpg
with Lyman front sight too

I found two Winchester type 1 slides in the spare parts bin, W in the box. One with a N and one with an O near the location of the R on yours.

Thankyou Bubba

I have a 1.07 with W in bottom of box and M on the arm. Hard to tell ,but looks a little like the bottom half of the W about a inch in from end below the line amongst the mill circles. John

Ive used a loop, its not a W...no letter at all, but I know it is WRA..