When I went into the IRR the Army was still using the Class A, now that I'm back in the service they using the ASU. I didn't want to take apart my Class A apart for sentimental value, so I purchased new ribbons and everything else. I've been trying to find the measurements and stuff and I cannot find them .. I'm pretty sure they are in AR 670-1 but I cannot find it in it.
If you see your EOD tech running.. you better keep up.