What's the history behind the moderator?

[lysander]

So the question I have is why does my 10.3 Crane spec barrel run fine without a moderator and without exhibiting the issues of the XM177. Not trying to be smart ass, but my upper isn't sprinkled with magic fairy dust. Physics haven't changed. What makes the difference? I usually run a can on it, but it runs without just fine. In fact I think .070 is a bit overgassed.

A few things:

1) A new extractor spring.

2) A new magazine follower and spring.

3) A heavier buffer.

4) A new disconnect spring.

5) New feed geometry



And according to the reports, the 'moderator' was never intended to fix any reliability problems, it was in fact the source of several problems.

Oh, and by the way, most civilian ARs are under-gassed. Point one straight down and fire it, most will not lock back, nor (I suspect) will most work properly in arctic temperatures.

[MistWolf]

A few things:

1) A new extractor spring.

2) A new magazine follower and spring.

3) A heavier buffer.

4) A new disconnect spring.

5) New feed geometry

All of the above.