So I am ready to put together a 300 blackout build with a law tactical folder. Deciding between an 8 inch Aero Precision upper at around $400 vs a 7 inch BCM at $720. Not sure the BCM is worth the extra expense or not. First 300 blackout build so thought I would get some advice here first. Planning on shooting supers unsupressed (backpack gun). Sig Rattler not an option at this point .