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2/10/2009 11:54:05 AM EDT
Is the buffer retainer the only thing stopping the buffer from flying out as it returns? I mean obviously the BCG and upper receiver is in the way... but does the buffer slam into the buffer retainer every time it returns home? My buddy had his shear off in a DPMS gun, and I've heard of it happening in a Stag as well, which has me worried. Seems like a very tiny part, doing a big job.
2/10/2009 11:56:49 AM EDT
[#1]
I've never had that problem, even when shooting full auto
2/10/2009 12:10:23 PM EDT
[#2]
Quoted:
Is the buffer retainer the only thing stopping the buffer from flying out as it returns? I mean obviously the BCG and upper receiver is in the way... but does the buffer slam into the buffer retainer every time it returns home? My buddy had his shear off in a DPMS gun, and I've heard of it happening in a Stag as well, which has me worried. Seems like a very tiny part, doing a big job.


The buffer retainer pin only makes contact with the buffer when the upper and lower are separated. When the rifle is "closed" the rear of the bolt carrier presses against the buffer and holds it slightly rearward, enough to remove contact with the retainer pin.

2/10/2009 12:17:29 PM EDT
[#3]
Quoted:
Quoted:
Is the buffer retainer the only thing stopping the buffer from flying out as it returns? I mean obviously the BCG and upper receiver is in the way... but does the buffer slam into the buffer retainer every time it returns home? My buddy had his shear off in a DPMS gun, and I've heard of it happening in a Stag as well, which has me worried. Seems like a very tiny part, doing a big job.


The buffer retainer pin only makes contact with the buffer when the upper and lower are separated. When the rifle is "closed" the rear of the bolt carrier presses against the buffer and holds it slightly rearward, enough to remove contact with the retainer pin.



Excellent... I am one more step removed from being a complete noob. I didn't think it sounded right.
2/10/2009 1:25:03 PM EDT
[#4]
Quoted:
Quoted:
Quoted:
Is the buffer retainer the only thing stopping the buffer from flying out as it returns? I mean obviously the BCG and upper receiver is in the way... but does the buffer slam into the buffer retainer every time it returns home? My buddy had his shear off in a DPMS gun, and I've heard of it happening in a Stag as well, which has me worried. Seems like a very tiny part, doing a big job.


The buffer retainer pin only makes contact with the buffer when the upper and lower are separated. When the rifle is "closed" the rear of the bolt carrier presses against the buffer and holds it slightly rearward, enough to remove contact with the retainer pin.



Excellent... I am one more step removed from being a complete noob. I didn't think it sounded right.


The carrier has a little notch in the end of it.  Just about big enough to allow clearance with the buffer retaining pin.

hmmm...

ETA:  If the retaining pin wasn't screwed down into the lower far enough it's possible for the carrier to contact it.  This might also cause the carrier to get hung up in the buffer tube...which is bad.

assembled correctly, you shouldn't have any problems out of it.

2/10/2009 4:59:42 PM EDT
[#5]
At the risk of stating the obvious, something is out of spec if the retaining pin is sheared off.
The rifle will actually run without it, but shotgunning the upper receiver becomes a pain in the arse.
Moon
2/10/2009 5:23:35 PM EDT
[#6]
Quoted:
ETA:  If the retaining pin wasn't screwed down into the lower far enough it's possible for the carrier to contact it.  This might also cause the carrier to get hung up in the buffer tube...which is bad.

assembled correctly, you shouldn't have any problems out of it.



The buffer retainer is not screwed into the lower receiver. It is held in place by the lower receiver extension (buffer tube).
2/11/2009 6:16:24 AM EDT
[#7]
For some reason the carrier is striking the buffer retainer.  The gun should be inspected by a competent AR gunsmith to determine why that is occurring.
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