I have just won a Proof Research stainless steel barrel at a match. I get to choose any up to a value of $550 and as I am flush for precision barrels I was thinking of an AR barrel. I have no experience with any of their products or 18 inch AR barrels in general. What are opinions on an 18" vs 20" and any pitfalls I might encounter going with an 18" rifle gassed system?
This will be my first AR upper build and it will be used for service rifle competition out to 500 meters.
Thanks
Winnie
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