Going to shoot 6BR on my AT or AT. I'd like to convert the magazine to reliably feed the shortened rounds. I see Primal Rights has a kit for converting the AICS double stack single feed mags but the follower is different on the AT or AX mags. Does anybody sell a drop in kit for the AX or AT mags? Or am I going to have to copy their technique and cut my own parts? (spacer and follower). Thanks in advance