I built my dad a 243 AR out and he had some issues firing it today. He’s running an adjustable gas block. During firing some of his round were not ejecting and staying in the chamber and then trying to double load the next round. The problem is he lives very far so I’m unable to troubleshot it. I thought maybe he needed to open his gas block more but with the rounds not extracting at all it sounds more like an extractor problem? Some guesses would be greatly appreciated
243 AR cycling issues
- Thread starter wyattgtx
- Start date
More gas or less buffer, gas is easier to fix by phone.
That doesn't matter. The powder burn rate makes the difference. I have some powders operate the system better than others using the same bullet. I also doubt it is an extractor issue. As mentioned, there's not enough gas through the tube to function properly. If gas is at max setting, then drop buffer weight. If gas tube is not proper length, as I experienced, there can be problems. Does the gas tube extend 1/2 way into the cam pin cutout area of the receiver?
If the only change before problem is ammo either go back to same ammo to confirm ammo was problem or open AGB to see if more gas fixes it.
THIS for sure. Inside the BCG where the gas rings are. I'd suggest synthetic engine oil.
The problem could use a better description if you want good answers. But, given that you said it's trying to load a fresh round while the empty case is still in the chamber, that means the BCG has enough gas to fully cycle and either the extractor is not catching the rim and extracting, or the extractor is ripping through the rim. First problem is an extractor problem, second problem is an overgassed problem.
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Who's BCG? Low end LFAR extractors can have very shallow claws. This was a known issue 10 years ago. Today's BCG'S are better but you still run into it.
I missed that it was trying to load a fresh round. Yeah, this smells of extraction issues.
We need a detailed breakdown on parts and how they were assembled.
If it was a BCA barrel, I’m out.
If it was a BCA barrel, I’m out.
