Originally Posted By USMC503:
If you want a lightweight (or at least lighter-weight) receiver, check out Mag Tactical. They put out a receiver made up of some sort of alloy that is lighter than aluminum, but not as fragile (and shitty) like polymer lowers, just be ready to spend $170-200 for it pre-panic.
It's magnesium. Does that sound like a good idea to anybody?