They are not being reproduced currently. There was someone who did a few repros a while back, and they were pass-able at 30 feet. But they didn't seem to make a lot of them during the run. The price was up there as well.
NOS ones are made of unobtanium and seemingly only can be purchased with unicorn horn pieces. GOOD used ones are hard to find as well. Many times the used ones have the chrome that has turned dull and dark.