07-13-2021, 01:04 AM
Bigger diameter round. As it turns out, that's OK, because the ribs inside a 5.56 mag make a standard AR mag bigger in width than it really has to be - which I hadn't really considered before. So make the ribs a little more shallow, and now the mag is still big enough to allow the bigger diameter Grendel round to still fit and to stack smoothly. But with that, need a bigger follower, and need different angle magazine lips.
you CAN make Grendel work stuffing a few rounds into a standard 5.56 mag, but only a few, and don't bank on it.
you CAN make Grendel work stuffing a few rounds into a standard 5.56 mag, but only a few, and don't bank on it.