“First off, love this adapter but can only give it 3 stars purely for how finiky it is with magazines. I know they recommend TM magazines, but most of us just don't have those and are upgrading with ones we already have. PTS 250 mid-caps are the only ones I found that fit well and even those are extremely tight. I tried all the EMG, Evike, and several other brands and they were a no-go. Love the adapter. Just know you will probably be buy new (and the most expensive) M4 magazines”
