buffer damage

[Heretodaygonetomorrow]

That photo you supplied makes it looks like the buffer is smacking the end the extension tube pretty hard. Your buffer spring needs to be replaced.

1K rounds should not have caused that kind of damage. You might want to measure the inside depth the the extension tube to see if it was made too short. If you are using a carbine stock and buffer, a heavier buffer may help.

What brand is the gun, or is it a "put together" Frankengun?

[89LT1]

What about getting a heavier buffer? New spring.. maybe a little more stout and try to tune the rifle that way. Could go adjustable gas block as well.
Where is your brass ejecting at? Ar15barrels.com has some good info on the subject.

Sent from an electronic tracking device

brass is ejecting off the shell deflector and landing about 2 o'clock.


Adjustable gass block may be a solution but i would like to keep my A2 front sight.

No worries, my question was more a "did you plug in the pc" type of question. Another similar question is can you post a full length pic of your buffer to make sure it is carbine not rifle? Otherwise, seems like a faulty spring and/or buffer. It would have to be severely overgassed if the spring and buffer were good to go to begin with.

I will measure the buffer and look for anything intriguing on the spring when i get home tonight. What should the correct weight be for a carbine buffer?

i did notice that there is some wear on the face of the buffer as well, is this normal? i dont have a pic but i can post one tonight.

[IPSICK]

Rifle buffer & spring (TOP) = A2 full stock
Carbine buffer & spring (BOTTOM) = collapsible stock


Do you have the right buffer/spring in right stock?


dpc

Check this for sure.

brass is ejecting off the shell deflector and landing about 2 o'clock....

i did notice that there is some wear on the face of the buffer as well, is this normal? i dont have a pic but i can post one tonight.

2 o'clock is at least somewhat overgassed. Proper ejection is between 3-4 o'clock. Could go with a heavier buffer instead of adjustable. If you go that route, be sure you get a new quality spring.

Another spendy option is a JP Silent Captured Spring. You can get a spring pack with it that has different spring weight ratings to adjust cycling and ejection pattern. If you get this, you shouldn't have to worry about irregular buffer wear ever again. Just need to replace the spring at regular intervals.

[MXRider]

If there is nothing printed on the face of the buffer it's most likely a carbine. The damage you are seeing could be from the rifle being over gassed, or because that is just a cheap buffer. From your pics, it appears to be low quality.

With a 16" carbine barrel, you really should be using an H2 buffer. By nature carbine length barrels are over gassed, and H2 is the new standard for them, previously it was H.

Colt SOCOM barreled rifles are coming with H2 buffers now. Both of my 14.5" carbine Colt barrels are running H2 buffers. I shoot mostly XM193 and XM855, but also run PMC bronze which is weaker and I still don't have problems.

Yeah you could put fancy parts from JP or some other outfit in there, or you could simply slap an H2 in there like the military does and shoot on. I would also check your action spring. It should measure between 10-1/6" to 11-1/4".

[Sigma Pi]

is that one of them $8 ebay buffers?

I have one of those!!! I fired maybe 800 rounds on it, its now sitting broken on my bench. The tube and the face that hits the bolt became detached.

OP I ordered a sprinco blue (I have a regular carbine spring now) and ordered all three weights buffer if you want to try them out to dial in what you need, let me know. I am at 90706

[Glockrocks]

not sure on the make and weight of the buffer, it came with the assembled rifle. the ar is .223/5.56. and i have maybe 1k rounds through it max.

i havent touched anything on the internals of the rifle.

What's the model and make of said AR?

Check back with mfg if they will replace damaged parts.

[glock7]

I've never seen a buffer that beat up after only 1k. I'm assuming it's a cheap I buffer/spring. I have an old bushy with 6k through it and the buffer doesn't look like that. That being said my carbine gassed rifle gets an h2 buffer.

[glock7]

If there is nothing printed on the face of the buffer it's most likely a carbine. The damage you are seeing could be from the rifle being over gassed, or because that is just a cheap buffer. From your pics, it appears to be low quality.

With a 16" carbine barrel, you really should be using an H2 buffer. By nature carbine length barrels are over gassed, and H2 is the new standard for them, previously it was H.

Colt SOCOM barreled rifles are coming with H2 buffers now. Both of my 14.5" carbine Colt barrels are running H2 buffers. I shoot mostly XM193 and XM855, but also run PMC bronze which is weaker and I still don't have problems.

Yeah you could put fancy parts from JP or some other outfit in there, or you could simply slap an H2 in there like the military does and shoot on. I would also check your action spring. It should measure between 10-1/6" to 11-1/4".

This is the smart solution.

[starsnuffer]

Overgassed = undersprung. Run a stiffer spring and replace that buffer. Buffer (action) springs do wear out. My HK spring in my MR556 wore out after about 3k rounds and I had to replace it, but from what I understand that is normal.

-W

[bohoki]

I have one of those!!! I fired maybe 800 rounds on it, its now sitting broken on my bench. The tube and the face that hits the bolt became detached.

OP I ordered a sprinco blue (I have a regular carbine spring now) and ordered all three weights buffer if you want to try them out to dial in what you need, let me know. I am at 90706

crap i just got it in the mail today

funny they sent it to me in a flat rate envelope so they barely cleared $1 for it with ebay fees

man it sure is rattly



i figured it was worth a shot

[ar15barrels]

crap i just got it in the mail today

man it sure is rattly

You got exactly what you paid for.

[89LT1]

ok so here are some more details about the buffer set up.
the buffer tube is about 1" diameter

and just over 7" deep

spring length is about 10.25" long



here is the damage to the buffer face


and is about 3 3/8"


i am going to take the buffer to work tomorrow so i can weigh it

[89LT1]

dupe

[rero360]

You have two different issues at play here, the cheap buffer and spring being destroyed.

As to the wear on the face of the buffer, that is from one of two things: the bolt carrier is shorter than spec, or the buffer retaining pin hole is drilled too far to the rear. Regardless of which cause, the result is the same, as the BCG returns to battery, the buffer goes forward and slams into the buffer retaining pin, causing the damage that you see. When everything is to spec the buffer is never in contact with the retaining pin when the rifle is assembled as the bolt carrier will push it away from the retaining pin by a bit when in battery. With all that said, I've seen a few rifles that suffered from this problem, mostly frankenguns, but I've never heard of something breaking from that increased wear and tear, the buffer retaining pin could eventually shear in half or become deformed from the battering of the buffer, but I'd imagine that would take a buttload of shooting for that to happen.

[89LT1]

You have two different issues at play here, the cheap buffer and spring being destroyed.

As to the wear on the face of the buffer, that is from one of two things: the bolt carrier is shorter than spec, or the buffer retaining pin hole is drilled too far to the rear. Regardless of which cause, the result is the same, as the BCG returns to battery, the buffer goes forward and slams into the buffer retaining pin, causing the damage that you see. When everything is to spec the buffer is never in contact with the retaining pin when the rifle is assembled as the bolt carrier will push it away from the retaining pin by a bit when in battery. With all that said, I've seen a few rifles that suffered from this problem, mostly frankenguns, but I've never heard of something breaking from that increased wear and tear, the buffer retaining pin could eventually shear in half or become deformed from the battering of the buffer, but I'd imagine that would take a buttload of shooting for that to happen.

interesting, the pin doesn't look like it has any wear on it. And when i assemble the top to the bottom i can feel that the holt is pushing back the buffer just slightly. it could be that it only touches when being closed but when straight is just short of the buffer.