hehe you misread what I mean. I now what all the mods being done to the bolt pin are there for and all that schpewy, but thanks for the fancy pics

. Just thought that the pin was just that, the pin. Then the piece that slides on the outside is the actual "bolt". When you buy a bolt from critical you get just that , the bolt. If you want a snatch "pin" then that is something different, a pin(or bolt guide).
The 4b has both and that's why it's called a bolt "kit", because it contains both the bolt and the pin.
The anti roll back and plasteel firing chamber stuff is all being done to the pin/
When I say It doesnt matter Im not saying the mods don't matter I agree that they are effective and I like. Just making a trivial observation about terminoligy was all--- and really it doesnt matter what you call the thing.
period nuff said- boom headshot
and the milling of the noid vents didn't end up increasing the rate of fire at all unfortunately. Maybe with more agressive milling...