You mean the LAR-47 by RRA?
That seems to be what I am finding out....is there a particular classification for an AR chambered in 7.62x39?I wasn't aware that AR-47 meant any AR in 7.62x39mm.
I have seen several different varieties...some take AK mags...others have the "straighter" AR style mags.I have been told that they do not work well. Something about light strikes on the firing pin. But I was looking at uppers only if that means anything.