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What spring do I use for the short 2.575" buffer?


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New build.

I got a short carbine length ar10 buffer from Odin Works. The buffer length seems right but a standard 5.56 recoil spring will compress to solid and not allow the rubber bumper to hit the end of the carbine length buffer  tube. A standard 5.56 carbine buffer is too long.

 Am I supposed to shorten the recoil spring?  Why do they sell these short buffers without a matching spring?

Palmetto PSA upper .308

Noreen lower

standard 5.56 adjustable stock buffer tube

Standard 5.56 recoil spring.

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Thanks, you are right.  I have one of those but I took it out because it seemed like it took a lot of finger strength to operate the charging handle.

Now that I have looked at it more closely, I see that the Sprinco orange spring has fewer turns but they are more widely spaced.

I will just have to live with the heavy charging handle force, or get an extended handle.

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