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None that I know of....and why bother? Tapco and Thermold are both selling cheap versions and once they work the current kinks out of the mag fit, they might actually be useable/reliable in the new 580+ series.
In most of the U.S., Mini owners don't need to worry about such things. They use factory Ruger mags without restrictions (for the moment). The market in Canada is a pittance in comparison and likely not worth doing any AR mag conversion -- even if it were possible.
I've also been told that it takes approximately 5 minutes to unpin a pinned mag if a SHTF/TEOTWAWKI scenario suddenly erupted and civil unrest followed. Who needs 10rd LAR mags then? A factory Ruger mag is always better than an aftermarket mag -- especially if it has the potential to hold 20 or 30 rounds.