What lower did you SBR and why?
I did 2 Spikes because one had fire/safe and one said semi/safe.
Now thinking of doing one more, either a Gen 1 Aero Precision, New PSA lower, or my Armalite. The Armalite was on my 3 gun rifle and the Aero was my first lower I put together. The Armalite drops Gen1/2 magpul mags better. Aero is a cleaner lower and what I used for my LWRCi M6A3 upper.
Out of my 3 what would you do?