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Suggest to me a barrel for ARx39

I'm looking at changing a current AR Pistol build.
It's currently a 11.5" (carbine length gas) x45 BCM LW.
Looking into x39 barrels, the 10.5" seems to be preferred?
That said, what manufacturer would you suggest?

I would like to buy a barrel/bolt during the current sales.
KAK is what I was looking at.


ive had amazing results with my 6.5 grende Bear creek arsenal barrel. they have x39 barrels too



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