PWA (Pac West Arms) were mix and match rifles as I believe that they only made lowers.
"Ideology deludes, inspires dishonesty, and breeds fanaticism. Facts, experience, and logic are much better at leading you to the truth."
"Despite the conviction and seeming depth of knowledge with which ideologues speak, they are intellectual weaklings--joiners--who defer to systems of belief and charismatic gurus for their ideas." -- Daniel J. Flynn