5.56 NATO vs .223 Remington

[Gunmaster45]

Maybe I'm wrong, but the thing feels too damn heavy to be aluminum to me.

[Yournamehere]

Actually on the Bushmaster Website, it says that their receivers are either aluminum or carbon fiber, no steel, so you probably have an aluminum one, and yes, they are a bit heavy even with this. Aluminum isn't a helluva lot lighter than steel, depending on what's being forged.

[Gunmaster45]

Huh, I learned something.

[Phoenixent]

To bad I was hoping to build some steel M16's so the actors have a harder time destroying them and listen to them bitch about the weight. They bitch about the weight of the M4 nothing but whiners.

[k9870]

I'm pretty sure you can buy an AR-15 chambered in 5.56mm NATO, but good luck finding the ammo.

Um, may compays make 556 chambers, actually, most do. very few are 223 only. NATO-spec FMJ is common, and geerally cheaper.

[Yournamehere]

The only ones that interest me are the old Colt Sporters which are stamped .223, so the're out there. I haven't seen 5.56 NATO in a shop, but I see .223 everywhere, so maybe it's the area, too.

[k9870]

A lot say ".223 caliber" biut if you read manuals it will say both are safe.