A2 stock question

[BryanWoodstockGA]

I am not really working on a build but I did buy an Armalite AR-10 T that for whatever reason someone put a Magpul STR stock on it. I have an A2 stock but the buffer tube is longer than the Magpul. My question is do I need to make any changes to either the buffer, spring or tube?

This is the spring and buffer in the A2 tube.

[Radioactive]

There will be some armalite experts along soon. Looks like the spring is a little short to me can’t tell about the buffer.

[BryanWoodstockGA]

Spring is 10 1/2" buffer is marked H2 and is 2 1/2" long.

[BryanWoodstockGA]

Ok so it looks like I need to buy a 308 rifle buffer and spring.

[BryanWoodstockGA]

How much does quality vary between buffer tubes?

[Radioactive]

7 minutes ago, BryanWoodstockGA said:

How much does quality vary between buffer tubes?

It certainly can vary as there is no real spec for the large platform. If it was me and I had an actual armalite ar10 I’d buy actual armalite components if possible. But that’s just me.

[BryanWoodstockGA]

Armalite is out of stock on A2 Stock kits, buffer kit but did have a buffer so I ordered one. So now I just need to find the correct spring.

 

[BryanWoodstockGA]

$12 shipping , they know if you are ordering from them you want OEM parts and can stick it to you.

[Radioactive]

In this case oem means made to the right specs.

btw go by the intro section and tell us a little bit about yourself.

[98Z5V]

Pump the brakes, people.

OP, Whatever you have in that collapsible stock (receiver extension) is not going to work in a rifle stock config.  You already stated a 2.500" buffer, so it's a DPMS-based buffer, that means it's a 7.000" internal depth AR15 carbine receiver extension.

That 10" spring is junk.

You need a rifle receiver extension that's 9 11/16" internal depth - they all are, and are hardly ever screwed up.  Measure anyway.  You need a rifle buffer that's 5.200" long, 5.4 oz.  That's how long .308AR rifle buffers are, for Armalite and DPMS-based platforms(I've seen some DPMS LR-308 rifle buffers that are 5.311", and a tick over). AR15 rifle buffers are 5.900" long, and that won't work in a .308AR.  You need the cheap, but REAL, Armalite EA-1095 recoil spring.  Not some rip-off or a fake.

After that, you need to figure out what stock you're putting on it.  If you're going with an A2 stock, like a surplus stock, then you need a few specific things that adapted the A2 to the rifle recoil system. If you're going with an A1-spec'd stock, just mount it up.

Edited June 3, 2020 by 98Z5V

[BryanWoodstockGA]

Thanks

 

[shooterrex]

Call Armalite they will probably make you a kit with tube, buffer and spring. Just cuz the website say out of stock doesn't mean you can't get parts usually.

[BryanWoodstockGA]

I got it all sorted with a rifle buffer and a Tubbs flat spring. Runs right. I got a DPMS carry handle. I am still looking for an Armalite carry handle and a front sight.