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Posted: 1/25/2006 7:46:36 PM EDT
My Recce started giving me trouble last range trip, and since the lower has about 2-2.2k rds thru it, I figure the buffers pring is worn out. While I am at it I will replace the buffer with a new one. Problem is that I don't know what to replace it with.

The rifle is a 16 inch Recce with a midlength system.

So, should I go with an H or an H2?
Link Posted: 1/26/2006 4:14:36 AM EDT
What exactly is happening to your carbine? FTF, FTE, double feed, short stroking?
Link Posted: 1/26/2006 4:17:16 AM EDT

Originally Posted By Yojimbo:
What exactly is happening to your carbine? FTF, FTE, double feed, short stroking?




+1

could be something totally opposite of what you are trying to do.

in my recon middy i am using the mgi buffer which is about the same weight as a 9mm buffer but with the plunger.
Link Posted: 1/26/2006 6:57:48 AM EDT
Link Posted: 1/26/2006 7:41:12 AM EDT
It was failing to feed tha last round in a mag, and ocassionally it failed to eject a casing when it locked back on an empty mag.
I had this issue before on another one of my AR's, and replacing the spring fixed the problem.

The mags in question are dead nuts reliable. They are USGI 20 rd mags with Aluminum followers, I used them for Service rifle competetion for a while, so I am convinced it isnt the mag.
Link Posted: 1/26/2006 7:44:22 AM EDT
9mm in my recon middy...no issues whatsoever
Link Posted: 1/26/2006 8:02:07 AM EDT
Grant,
Good thread. Took out my spring, and its definatly in need of replacement. It measured a hair under 10 inches.

I guess its do to the lots of dry firing I do, and the fact I only shoot NATO spec ammo and hot 77gr handloads.
Link Posted: 1/26/2006 2:08:11 PM EDT
[Last Edit: 1/26/2006 2:09:19 PM EDT by TigerStripe]
I would go with a 9mm buffer, maybe an MGI. Model 1 sold me two 9mm buffers for $25 each. MGI buffers are $140-$150. I'm thinking about upgrading my buffer spring as well...

TS
Link Posted: 1/26/2006 2:47:56 PM EDT
Link Posted: 1/27/2006 9:42:08 AM EDT
I ordered an H2 and one of those super springs from GRtactical today.
Hopefully I can test it next week.
Link Posted: 1/27/2006 5:06:17 PM EDT
I am running H2 buffers in everthing. Takes out the snap on recoil
Link Posted: 1/27/2006 5:12:56 PM EDT
tagggit
Link Posted: 2/2/2006 3:47:53 PM EDT
Well, I got the ISMI spring and H2 buffer from Grant on Monday, went shooting on Tuesday.

All I can say is wow. No felt recoil, and very, very smooth. Grant, you are on to something with these. . . .
Link Posted: 2/2/2006 5:53:15 PM EDT
Link Posted: 2/2/2006 8:32:51 PM EDT
It really depends on how the gas port on the middy is cut. I've had two midlengths that run fine with 7oz MGI buffer and I've had two midlengths that only function well with standard carbine buffers.

Given that there is less room for error with a midlength gas system, I would favor a lighter buffer system and stick with that unless you are seeing issues. Just switching to a midlength will drop port pressures considerably and change dwell time. While you may be able to further change that by a heavier buffer, it may not always be a good idea.
Link Posted: 2/3/2006 6:22:19 AM EDT
Link Posted: 2/3/2006 8:23:20 AM EDT
A properly built midlength will run fine 100% with a standard carbine buffer.

Link Posted: 2/3/2006 11:47:54 AM EDT
[Last Edit: 2/3/2006 11:48:54 AM EDT by WIZZO_ARAKM14]
My middy ran fine with a standard carbine but it was still ejecting forward (around 1:30-2:00 o'clock) so I decided to throw a 9mm buffer in there to see what happened.

It started ejecting at roughly 3:30 or 4:00 o'clock, which was still ahead of where my 20" rifles were ejecting, and the rifle still operates 100% (I've never had a single problem with it for the first 1K or so rounds I have through it) with Wolf 55gr and 62gr ammo.

WIZZO
Link Posted: 2/3/2006 1:56:45 PM EDT
Link Posted: 2/3/2006 4:39:07 PM EDT
Could someone kindly post the weight of the different buffers available.

Standard, H2, H3, 9mm, etc.

MGI=7oz
Link Posted: 2/3/2006 5:21:24 PM EDT
Link Posted: 2/3/2006 5:28:19 PM EDT

Originally Posted By Krazny13:
It was failing to feed tha last round in a mag, and ocassionally it failed to eject a casing when it locked back on an empty mag.
I had this issue before on another one of my AR's, and replacing the spring fixed the problem.

The mags in question are dead nuts reliable. They are USGI 20 rd mags with Aluminum followers, I used them for Service rifle competetion for a while, so I am convinced it isnt the mag.



If the recoil spring were worn out the rifle would recoil harder and have trouble stripping the first round in a loaded magazine. It sounds like something else...like your dead nuts reliable magazines.

Link Posted: 2/4/2006 1:08:31 PM EDT

Originally Posted By ian187:

Originally Posted By Krazny13:
It was failing to feed tha last round in a mag, and ocassionally it failed to eject a casing when it locked back on an empty mag.
I had this issue before on another one of my AR's, and replacing the spring fixed the problem.

The mags in question are dead nuts reliable. They are USGI 20 rd mags with Aluminum followers, I used them for Service rifle competetion for a while, so I am convinced it isnt the mag.



If the recoil spring were worn out the rifle would recoil harder and have trouble stripping the first round in a loaded magazine. It sounds like something else...like your dead nuts reliable magazines.





+1

throw some wolff mag springs in there, usgi 20's with alloy followers are really old.
Link Posted: 2/4/2006 3:50:54 PM EDT
I used the same mags when I was testing the new spring and buffer. Didn't have the malfunction.
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