I just got back my new bolt carrier group from LMT via UPS today. Took some pictures of what it looks like. LMT does not chrome the area where the bolt fits into anymore, thus eliminating the chipping of the chrome when bolt goes back & forth. Before I got my new bolt, I inquired about a "New Hole" that someone posted on AR15.com, when they got their new BCG back. LMT told me that the hole: "We just moved it and made it larger to vent gas out of the port window so that it isn’t blowing right back into the receiver."
Retrospect, I should of just kept my old bolt carrier, and just removed the chrome off in the area where the bolt resides in myself and saved myself a trip down to the UPS distribution hub and the cost of shipping. I have my doubts about the larger hole venting out more gas.
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