What 5.56 load is the military using?

[Lone_Gunman]

Is it a 55g or 62g?

What is the model designation?

Which bullet weight would be better for a Bushmaster AR carbine?

 

[yesterdaysyouth]

both i'd say...

m193 and ss109...

either would work great...

 

[EBRDude]

M855 62gr composite FMJ and M193 55gr FMJ
M855 in A2 (1-7 Twist) and above models, and M193 in A1's (1-12 twist)

 

[RooK]

The mk262 load is also in testing with limited quantities, basically a 77gr open-tip match bullet.