The teflon coating is NOT Mil-Spec, but it IS a much superior finish than the Mil-Spec moly dry-film lube "finish".
In many cases, the military will keep an old product or process LONG after it's really obsolete, simply because they don't want to spend the money to change the spec of something that already works.
Just a few years ago, they were FINALLY forced to change the specs for batteries, as standard military C, D, AA, AAA, and 9V batteries were all the ancient "carbon" batteries, while the rest of the world went to much superior alkaline batteries in the early 80s. In 2000, the military tried to renew the contract for batteries, using the 30-year-old specs, and none of the battery companies would bid on it, because they didn't make carbon batteries anymore. The military then had to update the spec to get the contract fulfilled.
-Troy