Yeah, I agree, shaving 4oz from one part is a decent amount, it all adds up. But if the Aero handguard has a significant comfort factor I’m willing to compromise. So mrd, do you have experience with the second hand machined barrel nut, can you vouch for its quality? I’m honestly surprised Aero decided to go with such a heavy barrel nut.
The barrel is an Odin Works 16” medium profile, intermediate gas. I think it's right around 2lbs.
mrd, other than the quarks you listed, how do you like the handguard? Do you wish you would have gone with something different?