I've decided to build another SBR but can't decide what barrel length to choose. I currently have a 7.5" 5.56 and a 9" .300BLK, from there it goes up to 16". I've seen a lot of people have 10.5" and 11.5" and either may be fine. I don't have a specific role set for the rifle so I'm just really wanting to hear everyone's opinions.
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