are there registered GI/aftermarket auto-sears?

[Quarterbore]

There could be but I have never seen one done that way. Right before the ban a number of eople tried to register all kinds of stuff and the BATFE went and audited many of these manufactures. There were a lot of MGs that were dertemined to NOT be MGs and were taken off the books and this would be an example of an item that I expect the BATFE would have removed if found...

Just a guess however...