If I bought a barrel to have the FSB pinned on I was leaning towards the Green Mountain.
I had got a new 20 in Del-ton upper a year or two ago. Crossed my fingers/rolled the dice on the "budget" upper but it didn't help. It didnt run well at all. Way under gassed. Sold it with disclosure for $150.
I'll keep an eye on that Brownell's upper.
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