Received the production-run of aluminum moons from Wyvern Creations. They are even better than the ones He sent for testing previously. Now have a threaded hole in the back for a arrow puller. They look great, are much stronger than plastic nocks and, judging from previous accuracy tests, perform well too.
I highly endorse them for anyone shooting a bow requiring moons, esp fast bows like the 175 Terminator, Cyclone and the like.

My Desert Stryker absolutely loves them!!!! Accuracy is great>!! Wyvern hit a home-run with these nocks!!

Does he make a short threaded flat nock?

The factory Gold Tip aluminum flat nock is threaded. Since it is already produced we did not bother re-inventing the wheel
Wyvern

Will that nock fit well in a 2216? Also, how much do they weigh?

23.1 grains but the ID of a 2216 is .311 and the largest we went with production is for a 2219 which is .305, so you are talking .006 more clearance. It "should" work, but I would use an epoxy rather than a glue to hold them in to take up the slack...
Wyvern