Awesome upper - Aero Precision M5 16in .308 CMV Complete Upper Receiver with Flash Hider w/ ATLAS S-ONE Handguard

Ok, I’ve owned multiple Aero 308 uppers and will highly recommend them to anyone. One thing you should know is that no one is 100 percent happy with what they get without doing their own personal modifications to it like Gas buster Charging Handle, Heavier or lighter buffer weight and spring, adjustable gas block with or without bleed off meaning most adjustable gas blocks block gasses from entering gas tube resulting in gases blowing out barrel where as bleed off gas blocks gasses and blows out the blocked gasses from gas block itself out front like a piston driven gas system. The majority 308 builds aren’t 100 percent reliable without tinkering on. I’ve got multiple Aero 308 uppers and all have been setup for a specific purpose. My self defense imaginary end of world upper has Superlative Bleed off gas block, Lantac NiB enhanced BCG, Melonite treated gas tube, Geissele gas busting charging handle along with lower mods like Geissele 2stage trigger, radian 45 degree selector, SpringCo red buffer spring and so much more cause it’s modified for a specific purpose, running it like my life depending on it. Aero Precision is extremely reliable but again, no semi auto 308 is going to be perfect right out of the box unless everything I’ve listed above is already included and in the price specially tuned from factory. I’ve even had serious issues with my LWRC REPR MK2 to where the gas settings just wouldn’t adjust correctly so I sold it after 3 visits to LWRC. I love my AERO PRECISION 308’s.