best length SBR barrel for 5.56?
thinking of building an SBR upper in 5.56 and was very curious as to the best barrel length for this project and why it is so.
i have read that the 7" barrels will knock your fillings loose so i was kind of leaning towards the 10" barrel.
thnx in advance!
I would recommend 10.5" or longer. Mine is 12"
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