Another AR magazine question and COAL

[Flewis]

Depends on the bullet with mine.

I use 2.240 with 208 grain Hornady AMaxes.

2.170 with 220 grain Sierra Match Kings.

But both of those work in regular GI magazine and PMags. I use the PMags 99% of the time though, as the GI mags sometimes cause the brass to get gouged on the feed ramps.