Initial thoughts in this ; clever. 2 areas of concern. My unit doesn’t like their charging handle. I’m guessing if I use it a few times it will wear in. The other is the mag catch. There is not A lot of meat on the mag release holding it in. I would have preferred to see them utilize the factory mag match notch. We will see if using an AR15 hammer helps with keeping the action closed and therefore changing how brass might be stressed. It feels and looks like a 3D printed part. The install took 15 min top. Most time was spent removing the receiver latching pin