Ruger made it in several flavors of tacti cool over the years, different calibers, folding stocks, it would have been a simple matter for them to reengineer the magazine port to accommodate the most popular magazine in the world.
Why can't magazine designers create a Mini magazine that works as well as the original and with volume, they would be cheap too. How many Mini's are out in the market ? 5 or 6 million ?? Maybe as many as their are M14's and M1A1's ??
kwg