Crypto Magwell modification

Quick question - does anyone know how to modify the Magwell on the crypto receiver to accept AR magazines?

I've done some reading and it's perfectly legal - just like modifying an SKS to take AR mags. I'm obviously going to adhere to the magazine size limits, I just don't like the design of the crypto proprietary mags.

I'm not a machinist nor a gunsmith so I'd like to take it to a gunsmith potentially, but I'd like to know what needs to be done so I can tell them what I'd like.

Thanks in advance