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I needed a 300 BLK barrel to convert one of my AR pistols to that caliber. After a lot of web searching, I found this Diamondback 10 inch item on Optics Planet. Got a good discount as well and the barrel was shipped really fast and arrived on time, securely packaged. I can find no manufacturing issues with this barrel; overall quality of chamber, feed ramps, bore, crown and finish is great. Glad I found this item, I hadn't shopped OP in a while but happy I came across the item.
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