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3/2/2008 8:29:11 AM EDT
Found answer
3/2/2008 8:33:59 AM EDT
[#1]
[Monopoly]   Go directly to jail...  Do not pass Go.  Do not collect your $200.  [/Monopoly]

3/2/2008 8:34:04 AM EDT
[#2]
I'd check/replace your firing control group
3/2/2008 8:35:17 AM EDT
[#3]
The first thing I would do when buying a used AR is remove and clean all the fire control parts. Check for excessive wear and proper installation of these parts.
3/2/2008 8:36:51 AM EDT
[#4]
Found answer
3/2/2008 9:00:57 AM EDT
[#5]

Quoted:
Upon inspection the pin holding the trigger in place was backed out a little so it was stickong out the right side of the weapon.  Looked like it was wnough to create play in the trigger mechanism.

Problem found?

Thanks for the direction to look!


If the pin walked out to the side, that means the spring was not installed with the legs in the grooves of the pin
3/2/2008 9:15:26 AM EDT
[#6]
Do a safety check. Make sure the disconnector is working properly..
3/2/2008 9:17:50 AM EDT
[#7]
Be careful, the ATF don't play fair.  Read about the drill instructor who got in trouble for something like this.
3/2/2008 10:23:49 AM EDT
[#8]
Found answer
3/2/2008 10:31:35 AM EDT
[#9]

Quoted:

Quoted:

Quoted:
Upon inspection the pin holding the trigger in place was backed out a little so it was stickong out the right side of the weapon.  Looked like it was wnough to create play in the trigger mechanism.

Problem found?

Thanks for the direction to look!


If the pin walked out to the side, that means the spring was not installed with the legs in the grooves of the pin


I disassembled it and that's exactly the problem.  Now, hoe do I get the legs to engage the pin?  Done it twice and they still won't engage the pin?


Replace the FCG then. Don't take any chances, as it's already been said what the ATF does to folks when their semi shoots more than one round with one pull of the trigger. If the pins aren't working as they're supposed to then they simply need to be replaced pronto.
3/2/2008 11:52:03 AM EDT
[#10]
There should be a groove in the trigger pin that the leg of the hammer spring sits in near the end of the pin. if the leg isn't dropping into the groove it will walk out on you.

Do you know how to do a function check?

Separate your upper & lower.
With the hammer cocked, and held in place with your thumb - pull the trigger.
Push the hammer back until it engages the disconnector.
Keeping you thumb on the hammer, slowly release the trigger.
It should be caught by the sear - not fall past the cocked position.
If it didn't fall past the cocked position - all is well.
If it falls beyond the cocked position, your FCG is out-of-spec, and should be replaced.

Buy a lower parts kit, replace the FCG group and look at the current parts for modification. If the previous owner did anything to make this condition happen, go see him about it. He could have cost you 10 years & $15,000.
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