I am starting to hate my AR! Please help!!Update post 65! Problem solved!!

Still alive said:
I was told the test for proper gas rings is that the bolt doesn't fall out on its own when the detente pin is removed. Correct?
I tried that last night and it didn't fall out.
And, yes, it's PMC .223. Do you think that is the problem? I've never heard of people having issues with PMC ammo before.
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You remove the firing pin retainer, firing pin, and cam pin, then hold the carrier with the bolt facing down. If the bolt doesn't fall out under it's own weight, the rings are good.

Some people erroneously believe that the test is to sit the carrier with the bolt facing down and if the rings can support the weight of the carrier without the bolt telescoping inwards, the rings are good.
 
*MALICE* said:
You remove the firing pin retainer, firing pin, and cam pin, then hold the carrier with the bolt facing down. If the bolt doesn't fall out under it's own weight, the rings are good.

Some people erroneously believe that the test is to sit the carrier with the bolt facing down and if the rings can support the weight of the carrier without the bolt telescoping inwards, the rings are good.
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Thanks Malice!
Exactly what I did and, no, it didn't fall out so rings are good!
 
He could always try with another bolt if he suspects thats the issue, pretty easy to do really.
and that would rule out all bolt related issues.
 
mikethebike said:
He could always try with another bolt if he suspects thats the issue, pretty easy to do really.
and that would rule out all bolt related issues.
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I have another Colt USA BCG. Good point! I'm hoping its as simple as either bad ammo or a new BCG.
Can you give me input if this may be a gas port issue also?
Some people are saying it may be a short stroking issue due to the buffer weight. I'm worried its the gas system.
 
Still alive said:
I have another Colt USA BCG. Good point! I'm hoping its as simple as either bad ammo or a new BCG.
Can you give me input if this may be a gas port issue also?
Some people are saying it may be a short stroking issue due to the buffer weight. I'm worried its the gas system.
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buffer? this is carbine length right?
carbine gas systems are pretty damn violent, i doubt it would be short stroking because of the system
but you can swap lower and try the upper on a lower you know works.
 
Here's my advice:

-Clean the gun, and lube it.
-Make sure your gas key is tight (wiggle it, if it moves it's loose)
-Shoot some American Eagle or Norinco through it and see if it runs
-Check that it locks back on the last round
-If it doesn't work, try the different bolt/carrier
-If it still doesn't work, remove the gas block and measure the port diameter.
 
10.5 guns are notorious for problems I personally like 16.5+ but im also a big guy. Try a bolt rebuild kit and see were that goes.
 
*MALICE* said:
Here's my advice:

-Clean the gun, and lube it.
-Make sure your gas key is tight (wiggle it, if it moves it's loose)
-Shoot some American Eagle or Norinco through it and see if it runs
-Check that it locks back on the last round
-If it doesn't work, try the different bolt/carrier
-If it still doesn't work, remove the gas block and measure the port diameter.
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:rockOn:
 
mikethebike said:
buffer? this is carbine length right?
carbine gas systems are pretty damn violent, i doubt it would be short stroking because of the system
but you can swap lower and try the upper on a lower you know works.
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Agreed! On the other hand, due to the carbine length, the bolt could be going back and forth so fast, it has no chance to pick up the next round?
 
Suputin said:
First thing. Try different mags. Maybe something MIL Spec.

Have you had a look at the recoil spring? They do break. Cleaned out the buffer tube?

Clean the trigger group and look for crap stuck under the hammer and trigger.
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I always wipe down the trigger group with G96 before reassembling the rifle. Buffer and tube gets a wipe down regularly. Where's the recoil spring on the AR? You mean buffer spring? OR same thing? That is fine as well.
 
*MALICE* said:
Here's my advice:

-Clean the gun, and lube it.
-Make sure your gas key is tight (wiggle it, if it moves it's loose)
-Shoot some American Eagle or Norinco through it and see if it runs
-Check that it locks back on the last round
-If it doesn't work, try the different bolt/carrier
-If it still doesn't work, remove the gas block and measure the port diameter.
Click to expand...

Gun always starts clean and ends clean. I'm OCD that way.
Gas key is locked down. No movement.
I normally shoot AE, as previously mentioned.
It normally locks back on the last round but last night, it felt like it was locking back on charged rounds also! But I think they were double feeds. Hard to say when you can't see anything in the dark and you are getting extremely frustrated!
I will try a different BCG if nothing helps.
What should the port diameter be?
 
Still alive said:
Gun always starts clean and ends clean. I'm OCD that way.
Gas key is locked down. No movement.
I normally shoot AE, as previously mentioned.
It normally locks back on the last round but last night, it felt like it was locking back on charged rounds also! But I think they were double feeds. Hard to say when you can't see anything in the dark and you are getting extremely frustrated!
I will try a different BCG if nothing helps.
What should the port diameter be?
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where do you shoot?
 
Still alive said:
Same thought's already crossed my mind! I will be disappointed if I find out it's the ammo. PMC is one of the cheaper ammo right now! Also, I've never owned a gun that did not feed everything reliably. This AR will be the first if it turns out to be an ammo issue.
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Fwiw I was using pmc ammo as well with my atrs mag issues.perhaps my problem was ammo as well,
 
I shot hornady vmax that caused me problems in my mk12, but worked perfectly fine in my tavor and other ARs
some ammo just doesnt work well with some guns
 
Still alive said:
Same thought's already crossed my mind! I will be disappointed if I find out it's the ammo. PMC is one of the cheaper ammo right now! Also, I've never owned a gun that did not feed everything reliably. This AR will be the first if it turns out to be an ammo issue.
Click to expand...

I would happily blame the ammo (if it turns out to be the culprit) and not think of it as being a unreliable firearm. If the ammo doesn't do what it should, it's not the rifles fault it can't work right.
 
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