This may not be the Deal of the Century but if you’re already looking to buy a new barrel for your build you might as well get a really nice barrel nut for free. Right now through September 21st, if you purchase any barrel from Core15 you will also receive a free C15 barrel nut. These aren’t just any barrel nut though, the C15 barrel nuts are precision CNC machined from Stress Proof Steel. Read more about the C15 barrel nut and pic out your awesome new barrel at Core15.com. Get over there before their all gone!!