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6/30/2014 11:26:48 AM EDT
i have a 9mm ar that wont firer when you pull the trigger you do here it working but it wont firer any help would be nice thanks every one
6/30/2014 11:40:41 AM EDT
[#1]


Take the safety off and then pull the trigger?
6/30/2014 11:45:03 AM EDT
[#2]
....Is there any indentation on the primer?
6/30/2014 11:45:59 AM EDT
[#3]
We are gonna need more than that man. Does the primer look like it has been struck at all? Is the hammer releasing?
6/30/2014 11:46:24 AM EDT
[#4]
Quote History
Quoted:
....Is there any indentation on the primer?
View Quote


Well, that.  

Also, tell us about this 9mm AR.  Did you build it?  Did you buy it?  is it factory new?  is it used?  We need a LOT more details to help diagnosis this problem other than what you've provided.  


6/30/2014 11:52:46 AM EDT
[#5]

Are you using good ammunition?  Did another firearm function with the ammunition?

Were there dimples on the primers when you ejected the non-fired rounds?




Open it so you can see the hammer, check the function of the hammer, trigger, and safety.

DO NOT let the hammer hit the receiver when you do this, hold your thumb against it so it doesn't fly forward.


Cock the hammer.




Safety - on safe - pull trigger, hammer should not fall




Safety - on fire - pull trigger and hold it all the way to the rear, hammer should fall

with the trigger still all the way back, push the hammer back, it should hold in a rearward position

Let the trigger go forward, the hammer should stay cocked.  You'll hear a lick as the hammer goes from being

held by the disconnector (trigger back) to being held by the sear (trigger forward).












6/30/2014 11:59:59 AM EDT
[#6]
no in dent on primer and the safety is off it my have about 100 to 150 rounds throw it it was working fine then just stop working took it a part looked fine
6/30/2014 12:09:37 PM EDT
[#7]
Check the trigger/hammer function.



Take the bcg out of the upper and push the rear of the firing pin, the front of the firing pin should protrude from the bolt face.
6/30/2014 12:14:42 PM EDT
[#8]
Quote History
Quoted:
Check the trigger/hammer function.

Take the bcg out of the upper and push the rear of the firing pin, the front of the firing pin should protrude from the bolt face.
View Quote


I'm thinking broken firing pin as well.  
6/30/2014 7:54:57 PM EDT
[#9]
Can you tell that the hammer is dropping when you pull the trigger?  If yes and you aren't getting any kind of mark on the primer, it's likely the firing pin.  Either its broke or its not there.
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