Can you do this?
I have heard both ways. Yes it's fine and no it will/might damage the rail end.
I was considering replacing the standard DD MK18 rail that came on my 10.5" Noveske MK18 mod01 upper with a BCM KMR 10. (The current DD rail is about 9.5" or so.)
I know that the KMR is really only 10" on the sides at 3 and 9 o clock where it juts/tapers out a bit. I only have an A2 flash hider on the front and I don't really have any plans to put anything else on there.
-Thanks
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