I didnt realize their was a difference, or do you mean their "308" can. Mine was the 7.62 AK can.
They make a Kestrel 762AK and a Kestrel 762. The Kestrel 762 is longer, weighs more, and is rated for more calibers. In my opinion the Kestrel 762AK is basically a can designed for the AK platform that is over bored due to a high probibilty of un concentric threads. I've got one of the AK cans and it's not the best can but it does make the rifle hearing safe as advertised. I was overly dissapointed to discover it was not rated for 762x54 after purchaseing.