AR double fire issues?

[jchappies]

I have about 100 rounds through my AR and today it started to rapid fire in 2 round burst. It doesn't do it all the time, I just wondering what would cause this so i can fix it before i go to the range again.
I only have 1 mag so i couldn't try another one but the one i do have is brand new magpul 10/30

[223556]

Define "rapid fire in 2 round burst".
Does it fire 2 rounds with one pull of the trigger or are you puling the trigger for each shot?

[operator13]

Your hammer spring is probably installed backwards.

[emy]

have you done anything to the trigger, need more info on the ar . did you build it or bought it fully build

[ICONIC]

There could be several reasons for the double fire, check your fire control group for any loose parts. I would get it chcked out by a gunsmith do not fire it until you getthe issue fixed

[mecam]

You could be bump firing it, have another shooter shoot it. If not, do a complete function test and make sure the hammer is catching the disconnector while holding down the trigger and cycling the bolt, you should hear a click when you release the trigger.

[HonkingAntelope]

Want to post what ammo and BCG parts you're using?

[ThemBastards]

I had this happen several times recently. Is your trigger or hammer pin walking out?

[bender152]

That's a bonus feature!

Just kidding... check the disconnector spring on your trigger, it could be backwards.

[steve92407]

WOW you guys are throwing the kitchen sink at this one ammo are you serious.90 % of the time it is your disconector and spring.check the spring orientation.

[Creampuff]

I posted images of the springs awhile ago here:

http://www.calguns.net/calgunforum/showthread.php?t=32797

This might help you.

[steve92407]

Thanks creampuff i was just now starting to upload some some photos.

[FX-05 Xiuhcoatl]

WOW you guys are throwing the kitchen sink at this one ammo are you serious.90 % of the time it is your disconector and spring.check the spring orientation.

it's your fast trigger finger

[steve92407]

Blame it on wolf ammo!!!

[five.five-six]

Blame it on wolf ammo!!!

Wolf ammo has hard anvil primers, so no. It's more likely with high grade hunting or match ammo.