Quoted:
If you are positive that everything is installed correctly, and when you release the trigger it is not coming off the disconnector, then it is possible that you have a bad disconnector that is too long or burred, or a hammer that is slightly too tall on the disconnector sear engagement area, or possibly they are both slightly pushing their tolerance limits to the point it is a stacking issue. Have you tried lubricating everything in the trigger area so that all engagement surfaces are wet and see if that helps?
CY6
Greg Sullivan "Sully"
SLR15 Rifles
TheDefensiveEdge.com
(763) 712-0123
All parts are appropriately lubed. The strange this is that I cannot replicate this problem at home. I've dry fired the gun 20 or 30 times, kept the trigger held in, cycled the bolt carrier, and I always get a positive reset when I release the trigger.
I seperated the upper and lower and brought the hammer back til it caught on the disconnector while keeping the trigger depressed. When I release the trigger, the hammer is released and catches on the next "step"
I've got an ALG combat trigger on order, but would like to fix the issue in the meantime. I don't see or feel any burs on the disconnector. I suppose it could be out of spec.
Someone on another forum mentioned short stroking due to a loose gas key. I could not find a complete bolt carrier group, so I built a carrier using a Fulon Armory stripped carrier, BCM gas key and screw, MA bolt, cam pin, firing pin, fprp. I staked the gas key with a MOACK tool. I would think if that were the issue, I would have more problems than a failure to reset the trigger every 8 or 10 times.
Where would you begin? I have an ALG trigger spring, disconnector spring, and hammer spring I could try. I don't really want to get into filing down the disconnector.
Something else I forgot to mention was that the MOE grip was way too tight. I had to remove some material to get it to fit on the receiver. I don't think the safety selector spring is putting enough tension on the detent. When I flip the selector to the safe position, I don't get a positive click and the selector does not rotate all the way down. Is it possible that this is allowing the safety selector to move under recoil and affecting reset?