What do you guys think of the 5.45mm soviet rifle round? Is this loaded by any American company? Any advantage over the .223? I have heard that this round might be banned from importation, any truth to this? Is there a threat of the supply drying up? I am tempted by a SAR2, but am not sure of the round. I would like to shoot it in the future, not have it be a paperweight due to a lack of ammo. Any help would be greatly appreciated.