I was wondering the same thing.
Specifically the 11.5" BCM upper with 11" Larue rail.
I hadnt considered shaving the rail down 1/4" or so.
Although it will cut into the last vent holes.
Deciding on an SBR upper is difficult
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I was wondering the same thing.
Specifically the 11.5" BCM upper with 11" Larue rail.
I hadnt considered shaving the rail down 1/4" or so.
Although it will cut into the last vent holes.
Deciding on an SBR upper is difficult