By the way, where is that famous chart for AR rifles? Is it even currant anymore?
I'm afraid that I am unaware of the chart that you are speaking. if you are refering to the one that shows where certain companies contract to have their recievers made I'm afraid is grossly outdated. there are several that have switched fabricators and others that have been introduced since then. it can usually be found on AR15.com. if that is not the chart you are talking about then I am very sorry for adding useless information.
ignore my complete lack of capitalization. I still have no problem correcting your grammar.
I never said half the crap people said I did-Albert Einstein
You can't believe everything you read on the internet-Benjamin Franklin
Bean counters told me I couldn't fire a man for being in a wheelchair, did it anyway. Ramps are expensive.-Cave Johnson.