My guess would be "no", but there's nothing stopping you from
making your own, if you could get rid of/change the FS to a brake,
pin, or replace the stock, etc.
I had entertained the idea, but for the amount of BS youd have to
go through and money involved one is in the same price range where
you could buy a Pre-Ban AR lower and a piston driven upper- and
then not have to deal with the post-ban compliance gayness.
-Mike