Thanks Mark. To clarify my "volume", it was sent via email, by Mr. Lynn, so am guessing it would have the latest updates, but would certainly be nice to know if it is the most up to date version. A bonus for acquiring signed Volumes 2 & 3. I do love my books.
Anyway, check out the pics. Especially nos. 1, 2 & 3. This particular specimen is threaded in both ends. One for the M10, M205, etc version fuze and the other for the M228. How about that! Might answer the conundrum. There is a remnant of the cap still rattlin' around inside. The other two samples are only threaded in one end. Am I lucky or what? And no, I didn't just run out to the shop and thread the blind hole. This is fer real! I'm excited by this, actually.