Is New Frontier a good lower receiver??

[brainman]

The difference in cost between a NF poly lower and an entry level forged aluminum receiver is trivial. Stripped AL receivers are showing up again. IMO it just doesn't make sense to go cheap in this case.

While you are correct that the difference in cost between a NF poly lower and an entry level forged aluminum receiver is trivial, the difference in what those pieces are is not. A better comparison is the difference in cost between a complete poly lower and a complete lower with an aluminum receiver. That difference is in no way trivial.