Alex Robinson sent me an email saying that the Robinson Arms XCR 6.5mm (I assume it is the 6.5mm Grendel) caliber conversion kit will be shipping in the second week of February and the 7.62x39mm kit near the end of February.
I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!