So wait. Rob has spent countless hours collecting data and compiling the chart. Numerous Instructors will comment on failure rates to anyone who asks. And our own Mr. Roberts has posted his own personal experiences. And you claim there is no data?
No I am not "claiming" cause "claiming" would imply that such a test has been done and that someone has access to the results and that I simply have not seen them yet.
I am saying "that there is no data, end of discussion". I say this because there is no actual data on AR-15 failure rates from the different builders. I work in a lab that does nothing but test products for both civilian and military hardware and I can tell you that unless such a test has been conducted under controlled conditions with random samples of every manufacturer... or second best being, somehow compiling a list of failures from the manufacturers of the defects that they see most, and what percentage of their rifles get returned for warranty service, then all you really have is very circumstantial evidence and opinion.
Like I said before...
If DPMS is the second largest builder of AR-15's in the world and they build an estimated 60,000 rifles in a year and has a 1% failure rate. And LMT builds 10000 rifles in a year and also has a 1% failure rate. Then YES you are going to hear about many more Panther AR's with problems on the gun Boards then LMT problems, because there are MANY MANY times more DPMS AR's then LMT AR's (not to mention Bushmaster), and even if it seems like you hear more things about them failing, the reality is that they are equally likely to fail.
But since NO ONE has actually shown up with verifiable product failure rates of any of these brands, we simply don't know what the real world failure rates are, and it seems silly to pretend that we do. And you would be hard pressed to find any professional doing product testing that would make any judgments without actually seeing some hard data. And I am sure that Mr. Roberts is a good study of the AR-15, but I doubt he does a whole lotta lab time on these guns.
The chart is a fantastic piece of work, and it took a lot of time to compile, and it does a great job of showing what has been done to these rifles, and what has not. But what it does not show is weather or not these features actually effect the chances of a failure. In short, I think it mostly shows what features you need on a gun for it to closely mimic what our military uses in the field for the hobbyist who is interested in such things.
So, for the last time, does anyone here have any actual testing data on AR manufacturers products? Anyone? Cause I would really like to know, hell for all I know DPMS could have the highest failure rate of any rifle builder known, that has not been my experience, but I have not seen all that many examples (25-30 rifles... maybe?) compared to what is out there.