Why the fin ejector?

[XTCshooter]

I was talking to a coworker at the shop about PCCs and we were curious why the fin ejector is used vs the plunger ejector in the bolt like an AR? Was it just a simple as adapting what works in a handgun and transferring it?

[mmc45414]

Good question...

I wonder if maybe the bolt speed might be faster with the blowback guns. 

[mitommy]

The ejector also serves as a mag stop. The flaw is thar the set screws, that hold the ejector are just basically a friction hold. Over time my ejector moved up and allowed over inserting a mag. I fixed the problem by determining the proper location and drilling dimples in the side of the ejector for the screws to nest into. I also have a scribe line on the side of the ejector for a quick visual check that the ejector has not moved.