They look handsome, but I have my reservation about the thick ledges and geometry of the upward facing ejection port. They are great spots for snow, sand and mud to accumulate and sit on, then gravity will pull any debris into the ejection port. if they go with push rod, there is no exhaustion gas to blow the ejection port out either in some sort of self cleaning. This will not be the gun you put into the mud, pull it out and keep firing.
They need to remove all the thick edges at 6 and 9, and add an ejection port cover, for this sort of geometry.
And i suspect it ends up this way because they want to use a certain size of extrusion tube.