Since we're probably going to have a panic run on 5.56x45mm ammo here, what's the state of the alternate AR calibers?
6.8x43mm SPC: 15 loadings listed from 6 makers. 7 available from 4.
6.5 Grendel: 5 loadings listed from 2 makers. 3 available from 2.
.300 AAC Blackout: 12 loadings listed from 10 makers. 12 available from 9.
.300 Whisper: 3 loadings from 2 makers. None available.
.30 Remington AR: 4 loadings from 1 maker: 3 available.
None of the alternates got more variety since last time. All of them are more in stock now though. The lack of variety in the loads could very well be due to the market deciding what they want to see, especially since the "same" load from two different makers is counted as two loadings here.