I just don't understand the need for a 5.7 round in a semi-auto/bolt action rifle, it is comparable to a 22 mag in energy right? Especially since we cannot get the special ammo in the civie world. It might be a nice short range varmint round but I see it of no use in the HD role when we have better tools. I think it is great in a full-auto sub gun with the special LEO/Mil only bullets. Dumping five round in controlled burst on full auto into a area the size of a cup is great in CQB but since civie rifles can't do that, what is the point other then it being a range toy?