combined with "Who do you go with/trust?"
"It's the extractor or springs."
"It's the ejector."
"It's the -" On and on.
Because there are so many things that may have affected this particular rifle, but might well mean nothing to any other.
Which reminds me of a tale told about a week ago, guy had bought modular trigger for his AR, and it wouldn't operate correctly. He brought it to the gunsmith and told him about it, and it was tested. So they started checking and replacing things, on and on, and nothing worked. They finally decided "We've changed/tested everything except the lower receiver, let's try that" and stuck it in another receiver of the same brand, using the original bolt carrier group, buffer stuff, etc. And it worked flawlessly.
And yes, they checked everything on that lower, inside and out, and could find nothing to explain this. Obviously there's something off, but...
7 comments:
Tolerance stacking is a thing. All the parts may be in spec but a trigger group just a skosh too wide going into a lower milled a skosh to narrow could bind. Until you mike everything and compare measurements you'd never find the problem.
Reminds me of the time when I was a kid, my Dad had a Gran Torino station wagon. When traveling down the highway there was a noise that came from the back. He took it back to the dealer several times. They kept saying nothing is wrong. One day he had it all apart, and i was standing behind him. I asked if the spare should be in backwards like that. He turned it around and didn't have no more problems after that.
You said the adjustable gas block wouldn't close off enough to keep it from cycling.
I'd be finding out why not.
Sorta makes you want to go back to original equipment.
-lg
I don't think I've had it that far to 'vent the gas', next time shoot it will find out.
They are honest, they don't insist their block will fix all things, it did work nicely to tune it for non-suppressed use.
I’ve assembled two AR 10’s and it took a great deal of trial and error to get them reliable but I managed. Currently have two store bought versions, an SFAR and an M & P 10. Both function fine unsuppressed and the SFAR does okay suppressed with the gas turned down to 1 and an H2 buffer. I really like a 7.62/.308 AR platform but would not trust my life to any of them. Range/hunting toys.
I've had a couple of people tell me that AR 308 rifles tend to be more picky about getting dirty, as well. It's a pain to figure some things out.
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