Designing a Grendel IAR

[stanc]

Nor has it been demonstrated that a 30+ rd magazine can be made to mil spec requirements.

Do I think it can? Yes, with a wider magwell.

IMO, a wider mag well, a la that of the LWRC Six8, would certainly be desirable. But, since standard-width, 25-rd 6.5 and 6.8 mags are available, and Barrett has made a 30-rd 6.8 mag for use in standard-width mag wells, I see no reason to think that such a 30-rd mag couldn't also be created for 6.5 Grendel.

In contrast, there is good reason to doubt that viable disintegrating links for 6.5 Grendel are actually doable.