Heavier A2 rifle buffer

[dmaxfireman]

Anybody ever swap out some of the steel weights for tungsten in a rifle buffer? I have an 18" white oak rifle length barrel with a fixed A1 that I'm trying to make shoot as soft my 10.5 LMT with an A5H4

[nimdabew]

I am going to do that very thing with my A5 this weekend.

[BUBBAGUNS]

I think you can buy a heavy rifle buffer. I can not remember were I saw them. Google it, it will come up.

[dmaxfireman]

So I just weighed four Vltor buffers using a food scale so its probably not the most accurate but it's what I have to use.

A5H1 - 4.55oz
A5H2 - 5.47oz
A5H3 - 6.31oz
A5H4 - 7.16oz

I broke down another A5H2 and removed both tungsten weights and replaced two of the steel weights in the rifle buffer.

Rifle buffer with all steel weights and aluminum spacer - 5.18oz
Rifle buffer with 2 tungsten and 3 steel weights and aluminum spacer- 6.87oz

I will probably not be able to get out to function test this until next week

[Clint]

Yes, you can beef up the rifle buffer and there's enough room for 7 weights.

The aluminum spacer can be replaced with two steel weights, producing around 6.15oz without resorting to tungsten.

Probably the best configuration is the "R6S" version with 6 steel weights and a biasing spring, weighing in at 5.65oz.

[BufordTJustice]

Yes, you can beef up the rifle buffer and there's enough room for 7 weights.

The aluminum spacer can be replaced with two steel weights, producing around 6.15oz without resorting to tungsten.

Probably the best configuration is the "R6S" version with 6 steel weights and a biasing spring, weighing in at 5.56oz.

I replaced the aluminum spacer with two steel weights for a buddy. He is running an FNH cold hammer forged stainless barrel, 20" with rifle gas.

Runs like a champ and is noticeably smoother than the std rifle buffer. Also helps keep his brass in better condition.

[tom12.7]

Yes, you can beef up the rifle buffer and there's enough room for 7 weights.

The aluminum spacer can be replaced with two steel weights, producing around 6.15oz without resorting to tungsten.

Probably the best configuration is the "R6S" version with 6 steel weights and a biasing spring, weighing in at 5.56oz.

Interesting? What spring is this? Unless I'm thinking wrong for some reason, the A5 type spring would have excessive free space for this setup?

[dmaxfireman]

A5H1 - 4.55oz
A5H2 - 5.47oz
A5H3 - 6.31oz
A5H4 - 7.16oz

A2 with 5 steel weights and aluminum spacer - 5.18oz
A2 with 2 tungsten and 3 steel weights and aluminum spacer- 6.87oz

These include the last weight rubber end and spring from an A5 buffer

A2 with 7 steel weights (aluminum spacer removed) - 6.14oz
A2 with 6 steel weights and 1 tungsten weight (aluminum spacer removed) - 6.98

[Heavy Metal]

Where would I get a correct biasing spring?

[dmaxfireman]

Updated weights, I had some failures to strip a new round and failures to lock back with the 6.87oz setup with American Eagle 55gr today. Ran amazing suppressed but once it got dirty and I removed the can it started to choke. Backed the weight down to 5.99oz

A5H1 - 4.55oz
A5H2 - 5.47oz
A5H3 - 6.31oz
A5H4 - 7.16oz

These include the last weight rubber end and spring from an A5 buffer

A2 with 5 steel weights and aluminum spacer - 5.18oz
A2 with 1 tungsten and 4 steel weights and aluminum spacer- 5.99oz
A2 with 7 steel weights (aluminum spacer removed) - 6.14oz
A2 with 2 tungsten and 3 steel weights and aluminum spacer- 6.87oz
A2 with 6 steel weights and 1 tungsten weight (aluminum spacer removed) - 6.98