What do you think of this LMT gas key situation?
I'm doing a build project with an LMT Defender lower I bought from Grant a while back, some Magpul stuff, and this NIB LMT upper I just bought off gunbroker.com.
Here's the thing:
The upper arrived today complete with an LMT BCG. Upon close inspection of the gas key, I saw that the tip of the key, the rim--the part that would meet the gas tube--is a bit distorted, for lack of a better word. It's sort of worn away a bit on the starboard side.
This "distortion" doesn't make the key opening more narrow or wider...it just looks like the world's smallest rodent gnawed off a tiny bit of the steel. Well, there's actually two tiny burrs inside the lip on the starboard side.
I'm trying to take a picture, but my camera isn't cooperating.
Because it's gunbroker, I can't see myself sending it back to LMT. I'm not the initial owner....
I don't know how tight the tolerances are.
a) Do the two burrs need to be removed in order for the key to function properly? I would assume so.
b) Is the mere fact that the rim is not 100% perfect going to be a problem?