Negative. 5.56nato has slightly different specs and higher pressure. Not designed to be shot in barrels labeled .223. Barrels can't handle the pressure of the mil spec round. Chance of kaboom!Fun guns
both cals.mentioned are pretty much samo samo one is civilian designation the other military
I have a Vortex and it's fared pretty well so far. Depends on your price range though. Aimpoint is great and if you want Holographic then EOtech. They're going to run a few hundred though. There are also some from Primary Arms that are supposed to be good if you don't want something too expensive.dont know yet, I have a crappy $35 scope from amazon .. =)) any recommendation for a red dot?