Problem with upper receiver?

[dskell]

I completed my first black rifle build today with the arrival of my Stag 2H upper. As per the owners manual I disassembled it for cleaning before shooting it for the first time tomorrow.

As I looked at the back of the receiver and BCG I noticed a small amount of "chipping" on the inside edge of the receiver. This upper is brand new and I'm guessing it shouldn't be like this. If this is normal please let me know, otherwise I'll be sending it back to Stag for replacement.



Close up:


Another close up:


Other side for comparison:


Please help!

[Noobert]

Its not normal, but i think it should operate fine

[fuegoslow]

Looks like a bit of pitting. Is this your first AR? It really is just cosmetics as it won't interfere with the charging handle function or bolt carrier cycling against the buffer. I know that when you spend hard earned money, you expect what you pay for. But in this case... Your call.

[dskell]

Looks like a bit of pitting. Is this your first AR? It really is just cosmetics as it won't interfere with the charging handle function or bolt carrier cycling against the buffer. I know that when you spend hard earned money, you expect what you pay for. But in this case... Your call.

Yeah it's my first.
Is there anyway the pitting could spread with use of the rifle? Even then, it should still be covered by the warranty.

[swerv512]

if you can prove it's pitting from corrosion or oxidation- then i'd send it back. it's my understanding that oxidation is a chemical process that continues beneath the top layer. if it's just a production physical flaw- i wouldnt worry so much. ARs are meant to be bashed....

[aplinker]

It's no big deal.

Just good ol' Stag QC.