The lite has a pencil barrel so that's about it.
thanks for the info new to ar 15 s
No standard AR receiver is made from steel, it is aluminum. And the "lite" does not refer to the receiver being made from Carbon Fiber. As far as I know there is only one maker of CF receivers, and they're not labeled "lite."
Also, I don't know if there is a standardized specification for a "lite" AR. But most likely, as said above, it primarily refers to the barrel contour.
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