I going to originally send my old win apex (cva kodiak) breechplug to ron to be modified. I picked up an brand new one for it. started to clean up the old one up. noticed how much larger the flash hole was next to the new one. my jaw dropped. the flash hole on the old is around 3x to as much as 10x larger then the new.

needless to say, I am not sending the old one off now. after looking at it. it is well used. going to picked up another new one to have an unmodified plug.

side by side pic
left brand new right out of the package, right old plug