Grendel mags?

[LRRPF52]

I took a PMAG and a CProducts 25rd mag, and did some measurements. I measured the outside width of each mag, and measured the wall thickness of each mag. Basically, we're looking at .087" of extra total thickness of the PMAG's polymer walls, which is about .044" per side of extra internal intrusion into the stack that a Grendel would need. A polymer mag could go thinner on the inside, but only where the Grendel case wall is, with moe than sufficient bulk of material in the rear, as well as around the shoulder, neck, and projectile area of the cartridges. This seems very solvable without resorting to a different mag well, like LWRC did with the Jordanian PDW.