no, all mine were manufactured by Dlask (site sponsor) and they look the same as bellero's.
there was a big demand for them but the production ended after the first run due to negative responses (you can guess what they are), which seems strange to me, its like complaining about the underfolder on a MP40.
for more info do a search "underfolder" in red rifles and good luck.
I think I have enough pictures in this thread to try and make my own adapter. Hopefully at any rate.
Nothing to lose.
Twist