I'm a fan of ARPerformance for standard AR lowers but if I'm shoehorning the longest widest cartridge I'm using the longest, widest mag-well. LWRC promises to open source their enlarged mag-well Six8 so expect other manufacturers mag-wells to get bigger also.
The Six8 uses a poly Magpul 6.8 mag with interior OAL of 2.32". Now someones going to come along and build a steel or aluminum mag getting the most out of the new mag-well dimensions. Those dimensions have yet to be made public but for all we know .473 diameter brass might double-stack in such a mag, and the interior length without the poly could easily be in the 2.4" neighborhood.
The issue is never the issue. The issue is always the revolution.
David Horowitz, Saul Alinsky and every woman I've ever argued with.
