Thanks Stranger.
I just check the all the locking face. It has one big notch and another three very small notches(only use fingers to feel it ). So I assume this is come from manufacturing or proof test. I had write to gun store and one of buddy told me just used the sand paper to buffer it or just left as it was.
Hi, Guys.
I just bought a Brand new Benelli M4 shotgun. After assembly this shotgun, I found there is a Notch in the bolt face( see the red mark)
It will influence the functionality ? or it is a big problem?
Thanks for your suggestion.