I use Tennessee Arms lowers if I want a light weight. It's the same polymer but there is a standard M4 tube and a collapsible butt stock. I have never weighed one so I don't know if I can beat auk1124's 18.5 ounces. I guess I should find a scale and find out.

None the less this is a good idea that has been improved on with modern tools, techniques and materials. As I recall the former maker built it out of carbon fiber and they had a problem breaking at the buffer tube.

kwg

For liberals and anarchists, power and control is opium, selling envy is the fastest and easiest way to get it. TRR. American conservative. Never trust a white liberal. Malcom X Current NRA member.