AR problem ** Solved hopefully ***

[caduckgunner]

I have been having a problem with one of my AR's. It's a stag lower w/ a CMMG 2-stage trigger, and an A2 stock. I has about 200 rounds through her, and has always worked great until 2 weeks ago when I noticed this problem. After I fire a round, it will load another round, but won't reset the trigger. Sometimes I can fire 2 rounds and then it will do this. I uninstalled the trigger assembly and reinstalled it, still have the same problem. If I pull back the charging handle an inch or so and release it, it works fine. I lubed it before I went to the range, so I know that is not the problem. I also swapped the upper to a different lower and it functioned fine, so the problem has to be in the lower. Could it be the buffer and/or buffer spring? Any other ideas?

[fabguy]

I believe the problem may be in your trigger assembly. When the bolt carrier slides back it starts to reset your trigger hammer. I would tend to think that if it were a buffer/spring problem it wouldn't either (spring too hard) slide back far enough to grab another round, or (spring too soft) grab another round but not fully engage the bolt. I am NO gunsmith though.(This is just my .02 cents) I hope this helps you.

[caduckgunner]

I believe the problem may be in your trigger assembly. When the bolt carrier slides back it starts to reset your trigger hammer. I would tend to think that if it were a buffer/spring problem it wouldn't either (spring too hard) slide back far enough to grab another round, or (spring too soft) grab another round but not fully engage the bolt. I am NO gunsmith though.(This is just my .02 cents) I hope this helps you.

I thought that also, that is why I reinstalled it.

[Noobert]

The bolt carrier will reset the trigger before stripping a round from the magazine, so i'm guessing your trigger assembly

[1lostinspace]

Sounds like it's the trigger assembly. Have you tried swapping out the buffer spring or installing that trigger assembly on another lower?

[caduckgunner]

I was reading on arfcom about a defective batch of CMMG 2-stage triggers. I called them and explained the problem. They are going to take care of it.

[fabguy]

congrats, soon you'll be ---->