Theoretical advantage of A5 buffer system?

[BufordTJustice]

What is the internal stroke of the A5 buffer, i.e. how far can the buffer weights move within the buffer body?

I haven’t measured.

I’m hazy but I want say Vltor made it slightly longer than a std carbine buffer. Don’t quote me.


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[Pappabear]

Botton line, they cost a little more and there is often upside and no downside. Zero downside that I've found. If you run a can, helps a lot. I dont know anything about the flatware either, I just use the spring they send with package. BCM makes one too.

There is a 5 position A5 or 7 position A5. I think they made the 5 for people that wanted their stock to go all the down on gun. So length could vary.

PB

[Disciple]

By all accounts they are superior. I have no doubt of that. I was merely curious why that is so from a theoretical perspective. My questions have been answered as thoroughly as I could have hoped for. Thanks again.

[nightchief]

https://www.arbuildjunkie.com/vltor-...stem-overview/

This Q&A with the designer at Vltor talks about the A5 system development and theory behind its effectiveness.

[Disciple]

I read that article before starting this thread. I did not find it satisfying. Emphasis is given to running a spring with a longer free length, but this can be achieved in the carbine extension using a flat wire spring. Emphasis is also given to the possibility of uncoupled mass above carbine H3 but the standard A5H2 is no heavier yet people find it superior. They did not spend much time talking about the biasing spring other than mentioning that it does not negate the deadblow effect on closing.

[markm]

Emphasis is also given to the possibility of uncoupled mass above carbine H3 but the standard A5H2 is no heavier yet people find it superior.

This is the thing that made rsilvers's findings interesting. The H2 carbine, although lighter, mimicked the Rifle/A5H2 most closely. In other words direct weight comparisons between carbine and A5 don't translate due to the different springs.

[Disciple]

I would love to find that post by rsilvers but I have as yet been unable to.

[bigkracka]

How does the A5 improve anything? The bcg moves the same distance. Over the years I've tried A5, flatwire springs, and heavy buffers. Nothing corrects issues like proper gas port. BRT gas tubes are a miracle.

I still run Tubbs springs, they just work.

[Clint]

Thanks for the kind words.

We believe proper gassing is the most important aspect.

A properly gassed gun will run a variety of buffers reliably, while no amount of heavy buffer will fully tame a grossly over gassed gun.

The A5 system does add a level of refinement and consistency vs conventional carbine buffer system.

How does the A5 improve anything? The bcg moves the same distance. Over the years I've tried A5, flatwire springs, and heavy buffers. Nothing corrects issues like proper gas port. BRT gas tubes are a miracle.

I still run Tubbs springs, they just work.

[pointblank4445]

This is the thing that made rsilvers's findings interesting. The H2 carbine, although lighter, mimicked the Rifle/A5H2 most closely. In other words direct weight comparisons between carbine and A5 don't translate due to the different springs.

Don't suppose you know what would be the ideal flavor of A5 (has to be H0 or H1...cause anything heavier won't work) for an upper that won't run anything heavier than an H1 carbine and milspec carbine spring?