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Posted: 11/2/2011 7:44:16 PM EDT
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I recently had my rifle apart I removed the fsb and installed a yhm lo pro gas bloek along with a samson 11" rail...
In doing this I had to remove the barrel and reinstall it along with the gas system... The rifle functions flawless until you cahmber a live round, when you drop the bolt to chamber a round it will stop just shy of being fully chambered you can see a little bit of the bolt head through the ejection port... Any ideas ? |
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Your gas tube is hanging up the carrier key Thats what I thought...but wouldn't that effect it with no round being chambered as well? unless the resistance from stripping the round and chambering it is just enough to slow it down and bind it good point |
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With the upper removed there is no binding what so ever of the bcg/charcing handle/gas tube and key and locking lugs...
When you drop a round by hand into the chamber and push the bcg forward it gets tight and leaves about 1/4 inch sticking out the back of the upper...so I guess you could say it lacks about 1/4" of being in full battery... |
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Quoted:
I recently had my rifle apart I removed the fsb and installed a yhm lo pro gas bloek along with a samson 11" rail... In doing this I had to remove the barrel and reinstall it along with the gas system... The rifle functions flawless until you cahmber a live round, when you drop the bolt to chamber a round it will stop just shy of being fully chambered you can see a little bit of the bolt head through the ejection port... Any ideas ? Wait a minute. What do you define as flawless? |
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Quoted:
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I recently had my rifle apart I removed the fsb and installed a yhm lo pro gas bloek along with a samson 11" rail... In doing this I had to remove the barrel and reinstall it along with the gas system... The rifle functions flawless until you cahmber a live round, when you drop the bolt to chamber a round it will stop just shy of being fully chambered you can see a little bit of the bolt head through the ejection port... Any ideas ? Wait a minute. What do you define as flawless? Pull the charging handle, lock the bolt back, drop the bolt closed, dry fire no issues... Do the same with a live round and the bolt stops 1/4" from closed... |
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I recently had my rifle apart I removed the fsb and installed a yhm lo pro gas bloek along with a samson 11" rail... In doing this I had to remove the barrel and reinstall it along with the gas system... The rifle functions flawless until you cahmber a live round, when you drop the bolt to chamber a round it will stop just shy of being fully chambered you can see a little bit of the bolt head through the ejection port... Any ideas ? Wait a minute. What do you define as flawless? Pull the charging handle, lock the bolt back, drop the bolt closed, dry fire no issues... Do the same with a live round and the bolt stops 1/4" from closed... Your tube is not centered and this belongs on the trouble shooting forum. Should have said so sooner |
I need to fix it before Saturday
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Quoted: I removed the upper and the BCG, I took a round and placed it into the chamber it drops in freely but it gets tight about 3/4 of the way in then it takes pressure to seat it completely into the chamber... If you remove the bolt from the BCG and slide just the carrier in, does it go in completely smoothly? |
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+1
what i normally do is before i bolt or pin down the gas block, i insert the BCG without charging handle to make sure BCG runs in and out of position smoothly. if gas block is hanging up the bolt at the gas key, you can feel it. you should be able to rotate your gas block slightly to find the best/smooth position (assuming that your barrel nut slot is close to perfectly lined up with the gas tube hole in the upper receiver) be sure to test the gas flow before you nail it down as well. Quoted:
Your gas tube is hanging up the carrier key |
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I removed the upper and the BCG, I took a round and placed it into the chamber it drops in freely but it gets tight about 3/4 of the way in then it takes pressure to seat it completely into the chamber...  How can it drop in freely if it takes pressure to seat it?
Anyway, clean your chamber with a solvent like Hoppe's and a chamber brush. Examine your fired brass for any weird marks indicating a possible burr inside the chamber. Get a bright flashlight and take a peek in there. |
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