I personally have Armalite and LMT carriers that have the foward assist notches cut down into the lower bearing surface.Ive seen a few other brands that were the same way.All the cuts are minimal as pictured above and it seems to be a very common machining error.
In the carriers I have,Ive seen no unusual wear to the upper or function issues.So I say its not an issue other than cosmetics if there are no raised burrs present.
I say lube it and shoot it.


Reply With Quote

Bookmarks