Anyone using any of the new BCM.....?

[methical20]

Is there any news regarding the BCM T2 mount or the new stock that they have been showing for a while now?

[BufordTJustice]

Tried a new A5H4 BCM Mk2 buffer. Smoother than the Vltor A5H4.

I see why Erik got the patent.


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[opngrnd]

Tried a new A5H4 BCM Mk2 buffer. Smoother than the Vltor A5H4.

I see why Erik got the patent.


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How does it differ from Vltor's A5H4?

[BufordTJustice]

How does it differ from Vltor's A5H4?

Uses an improved biasing spring, with longer service life (possibly indefinite due to a vastly lower K value than the std A5 buffer). Also uses an improved bumper.... apparently improved material and internal geometry to further reduce the jarring impact of the weight stack bottoming out during the recoil stroke.

It works.


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[titsonritz]

Uses an improved biasing spring, with longer service life (possibly indefinite due to a vastly lower K value than the std A5 buffer). Also uses an improved bumper.... apparently improved material and internal geometry to further reduce the jarring impact of the weight stack bottoming out during the recoil stroke.

It works.


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Is there anything special about the receiver extension or will the buffer improve a rifle with a standard A5 RE?

[prepare]

Uses an improved biasing spring, with longer service life (possibly indefinite due to a vastly lower K value than the std A5 buffer). Also uses an improved bumper.... apparently improved material and internal geometry to further reduce the jarring impact of the weight stack bottoming out during the recoil stroke.

It works.


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Where did this information come from?

[chamber143]

Where did this information come from?

Maybe in the product description on their website? Not sure but there is some info there.

https://bravocompanyusa.com/bcmgunfi...stem-mod-1-t0/

[prepare]

Buffer Weight Comparison


M16- 5.1

Mil-Spec
H – 3.8oz.
H2 – 4.7oz.
H3 – 5.0oz


VLTOR
A5H0- 3.8 oz
A5H1- 4.56 oz
A5H2- 5.33 oz
A5H3- 6.08 oz
A5H4- 6.83 oz

BCM MK2
T0- 3.8oz
T1-4.7oz
T2- 5.6oz
T3- 6.5oz
T4- 7.4oz

Notice the BCM Mk2 weights are heavier.

[prepare]

The biasing spring in the BCM MK2 buffer is definitely larger than the biasing spring in the VLTOR and looks like a better design.

I'm curious if the steel and tungsten weights are in the correct order? I bet they are.

The A5 weights are not.

BUFFER_ASSY_MK2_INTERMEDIATE__54548.jpg

[BufordTJustice]

Where did this information come from?

Or the patent filing.

Eric and JJ are the kind of inventors that, when they invent something, you slap your forehead. Simplicity has a beauty all its own.

https://patents.google.com/patent/US...10%2c415%2c907





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