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Posted: 11/7/2016 2:00:51 AM EDT
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I've put about 100,000 rounds through a host AR with a RDIAS and now it's having a trigger problem. In auto mode, the trigger works fine. In single fire mode, the tigger doesn't reset until about a second or so. Any ideas what's happening? Im guessing that the trigger is worn? Any ideas which part, so I don't have to replace the entire trigger group. |
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weak spring or maybe the trigger is gummed up with carbon.
I would start by removing all of the FCG, cleaning, oiling and reinstalling. If that doesn't work pick up a new trigger spring. all else fails just buy a new trigger. Shouldn't need to mess with the sear as your problem appears to be in semi-auto only. |
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When you say its doesn't reset for a second does this mean you pull the trigger in semi, release your trigger finger and the trigger just stays in the depressed fire position for a second or so and then snaps forward?
However, when set to full auto mode, you release the trigger and it moves forward with your trigger finger as you release pressure? If this is the case my guess is that the trigger spring is worn out or one of the legs on the trigger spring is broken. Its also possible that the disconnector or hammer spur may be peened at this point and there is additional friction between the two parts causing the delay in the trigger reset. The reason its probably still working on the Auto setting is that the trigger return spring is getting "help" from now compressed (by the selector) disconnector spring. If you have not changed out any of the springs in 100K rounds I would swap out the trigger, hammer, and disconnector springs. However, my guess is that the trigger spring is the culprit for the trigger not returning properly in semi, but I would check the hammer spur and disconnector for wear as well. If these parts wear enough you can end up with a safety issue where the gun will double fire on semi upon trigger release. This happens when the disconnector/hammer spur are worn to the point that hammer spur slips off the disconnector claw before the front edge of the trigger is in position to catch the hammer in the trigger notch cutout. |
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