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I'm looking for pros and cons to either a 10.5 or 11.5 223/5.56 barrel on an at pistol build. I saw one place that said the velocity out of an 11.5 is about 300fps faster on average than a 10.5. I still want to be able to shoot to 200 yards with it so I like that velocity gain. I also think the 11.5 is more reliable all around. But I like the PSA deal for the FN 10.5 barreled uppers. Do I go quality of functionality? What do you guys think? Pros, cons, suggestions? Thanks!