Question on bcg

[TF49]

So, I am trying to put a 6.5 Grendel ar and have a bcg designated for 6.8/224 Valkyrie.

Is this bcg suitable for use in an ar with the 6.5 cartridge?

To my eye, the 6.8/224 Valkyrie bcg is identical to another 6.5 G bcg.....

Thanks,

TF