AR Doubling

[El General]

I was shooting my AR at the range a few weeks ago and had it shoot (not intentionally) 2-3 round bursts with two different uppers (5.56 and Grendel). It did not do this consistently. CMC trigger.

Is there a common fix?

[RifleBowPistol]

I would contact CMC, sounds like you got a trigger that was made wrong in one way or another.

[trophy8]

New trigger.

[Killer]

People pay a lot of money for that kind of action!!

[Drycreek3189]

Maybe it heard that a judge struck down the bump stock law Trump slid in.

[Raider4044]

New trigger.

^^^


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[El General]

People pay a lot of money for that kind of action!!

It is quite alarming when you don’t know it’s coming.

[duckhunter175]

seen this happen one time before-- AR10, CMC trigger-- send it back.

[Chase4556]

I had mine fire two rounds consistently. One of my trigger pins had worked loose and walked out some. So double check your trigger pins would be my only suggestion other than contacting CMC.

[cblackall]

I've had this happen on a Stag 5.56 with a Geissele 3 gun trigger. After running all the checks on the disconnector and hammer, I determined I was the problem. I was shooting the rifle like I would a bolt action. Rifle on bags, "feathering" the trigger, with minimal pressure on the grip and trigger face. Turns out, with as short a reset as that trigger has and an autoloading rifle, it was creating a bump fire effect. The minimal recoil was enough to reset the trigger, and since I was putting minimal pressure on the face of the trigger and grip, the bolt would slam home, forcing the trigger into my finger and firing subsequent rounds. This only happened once. I cased the rifle until I could figure out if it was a mechanical issue. Once I figured out that mechanically it was good, and the issue came from how I manipulated the grip and trigger, all is well. Depending on how you were firing the rifle, this may or may not help, but it's something else to look at if everything else checks out.

[muzzlebrake]

My Saber Defence did it once. I replaced the Trigger with a whole new drop in and got a better trigger pull to boot. Sure glad there was no ATF snooping around when it happened.