Some of the feedback here sounds like relatively old tech for 308 ARs. It doesn't have to be that way.

I've posted this before - this is my 18" 308 next to my 16" 5.56. The 308 is slightly bigger, especially in the magwell, but only weighs 1/4 lb more as pictured.

I'm using a light weight bolt carrier that is the same weight as an M16 carrier, and a carbine buffer. The lower mass parts do help make the gun less picky about shooting technique. Tuning the gas system right makes a huge difference too.

Never seen any difference in the bolt release compared to my AR15s. They feel/function the same to me.

The barrel is not a big heavy pig, or a super light profile, but it shoots well without stringing. I could carry it hunting if I wanted, the bulk is more an issue than the weight.

I will say that my buddy's 16" DPMS is considerably heavier and doesn't run nearly as well.

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