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Posted: 9/29/2005 2:18:06 AM EDT
[#1]
is it dents in the face or a circular wear pattern around the outside edge?
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Posted: 9/29/2005 2:27:53 AM EDT
[#2]
I am not buell, but one of mine has excessive wear in a circular ring
consistent with the detent placement Problem? eta:  to your 10K
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Posted: 9/29/2005 8:26:10 AM EDT
[#3]
I am running an H buffer with a RRA M-4 stock, tube, and spring. (Armalite Mid length). No wear pattern is present.
It runs fine, however, my bolt no longer locks back after the last round, several different mags. Is this common with the H buffer? Anybody wanna trade for a standard RRA CAR buffer? |
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Posted: 9/29/2005 11:39:48 AM EDT
[#4]
I was wondering about the H buffer myself. I have a 16" Bushy without the H buffer....runs fine, but what was the purpose of the heavier buffer.....slow the cyclic rate in full autos, or improve cycling in 14.5 inch carbines and under??? Will I ever need one????
HEH....sorry for totally jacking this thread. |
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Posted: 9/29/2005 3:04:58 PM EDT
[#5]
it is dents and flaking in a circular pattern, looks rough
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Posted: 9/29/2005 3:53:33 PM EDT
[#6]
wear consistent with the rear of the carrier is usually caused by a rough spot on the rear of the carrier usually a burr at the rear of the keyway cut for the buffer detent.
impact marks consistent with the size and shape of the buffer detent are a sign that the rear of the bolt carrier is not contacting the face of the buffer as it should when the rifle is pinned shut tactile confirmation of this is easily achieved. any wear on the buffer is bad but impact is far worse and needs immediate correction. you'll have to determine if the buffer retainer is located incorrectly or if the bolt carrier sits too far forward. first check is to make sure the rear of the carrier is flush with or slightly above the rear of the upper when the bolt is in battery. H buffers are needed on 14.5" barrels but not on 16". thanks for the beer redfisher, I hadn't noticed the 10K 
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Posted: 9/29/2005 5:58:41 PM EDT
[#7]
Hey Tweak, send me an email and I will send you a photo of the face of the buffer
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Posted: 9/29/2005 11:21:34 PM EDT
[#8]
click the Email User button
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Posted: 9/29/2005 11:39:58 PM EDT
[#9]
lower or bolt is out of spec a little. When the upper is closed the bolt push back buffer 1/8'' or so. If the bolt is not in spec or the lower is not in spec the buffer is still riding on the detent. I had a lower that did that change lower buffer fixed. It will not hurt the rifle but you may want to order a few 50 cent detents because it will brake them. I have see a few ar do the same thing . Don't worry
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Posted: 9/29/2005 11:57:36 PM EDT
[#10]
contrary to that opinion I will stress that leaving the rifle as is will eventually cause the buffer to stick in the buffer tube (in one case the bolt could not be returned to battery) or the face of the buffer will be worn through to the point that the weights will break through. I have seen both happen. In addition to problems with the buffer detent hole location and the length of the carrier, dimensions such as the length of the threads on the upper, the location of the takedown and pivot pin holes in relation to the rear of the upper, the distance from the rear of the barrel extension to the rear of the shoulder of the barrel extension and and a host of combinations can cause this problem. |
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Posted: 9/30/2005 3:56:32 AM EDT
[#11]
could this be a week buffer spring or even short
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Posted: 9/30/2005 4:12:43 AM EDT
[#12]
no
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Posted: 9/30/2005 4:15:02 AM EDT
[#13]
press in on the bolt catch, slowly retract the bolt carrier, any binding? if not test if by firing one round while pressing in on the bolt catch to eliminate the mag and bolt catch as variables. if it short strokes then you most likely have a gas problem. is it a BFI? |
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Posted: 9/30/2005 4:59:51 AM EDT
[#14]
Factory COLT M4 I bought new in the box
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Posted: 9/30/2005 5:15:09 AM EDT
[#15]
deburr the rear of the carrier, you should be able to feel the burr with your finger.
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Posted: 9/30/2005 8:32:26 AM EDT
[#16]
my out of spec hesse lower did the same thing. I would send it back to colt
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