Sorry, I don't know what PM is.
If anyone is interested, I have a website to facilitate selling rides and giving flight instruction in the old girl. It's Warbirdsoveroregon.com.
Good morning Sander,
I'm the owner of a North American T6 aircraft. I'm trying to find either a N-3A or N-3B gunsight for my aircraft. I have installed an N-3C gunsight, but discovered I need a unit with an adjustable reticle. Are you interested in selling your unit?
Jim