and you cant expect your experience with a single rifle with less than 1000 rounds through it as a true definition of millions of rifles and dozens of models. your one SR556 may not have any of those problems but there have been several threads of TFL alone regarding this problem and I recall at least two that dealt with the SR556 specifically, try the search function it's a powerful tool.
some higher end models don't have these problems but the majority of us do not have the money to drop $3200 on a HK 416(or whatever the civilian version is). I have a DPMS sportical that is sub MOA and has never jammed once, that does not mean that DPMS is the best brand of AR out there.
ignore my complete lack of capitalization. I still have no problem correcting your grammar.
I never said half the stuff people said I did-Albert Einstein
You can't believe everything you read on the internet-Benjamin Franklin