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azairman86
02-07-11, 18:42
My friend just got a new AR and when he took it apart to clean it after taking it to the range he noticed that the back of his firing pin has very small burrs on it that weren't there when he first bought the rifle. Is this a problem and if so what might be some possible reasons for the burrs?
ssracer
02-07-11, 18:51
is the face of the hammer smooth?
azairman86
02-07-11, 19:07
Yeah its smooth. And I guess the burrs are more around the edges of the firing pin.
Marty916
02-07-11, 19:11
Are they sharp burrs or is the pin mushrooming? Might be a case of soft material. A pic would help.
azairman86
02-07-11, 19:14
They aren't all that sharp. He can only feel them. Not really see them
308sako
02-07-11, 20:02
The hammer is most likely hitting the pin shroud while cycling...
azairman86
02-07-11, 20:12
how big of a problem is this?
Iraqgunz
02-07-11, 22:05
Can we get some more info? What type of AR, BCG, etc...etc...?
SoCalTrojanSoldier
02-07-11, 22:10
Can we get some more info? What type of AR, BCG, etc...etc...?

Is the firing pin retaining pin beat up also?

If it is then it's probably due to unshrouded carrier.

My Colt with an unshrouded carrier did that. I switched to a fully shrouded carrier and it took care of the problem.

http://i483.photobucket.com/albums/rr197/jvw123/firing%20pin%20and%20fp%20retaining%20pin/CopyofDSCN1655.jpg

http://i483.photobucket.com/albums/rr197/jvw123/firing%20pin%20and%20fp%20retaining%20pin/DSCN1650.jpg