It works in standard 5.56 AR magazines and with AR-15 bolts. All you need to do to change your 5.56 to an 300 BLK is swap barrels, though most shooters opt for a separate upper receiver.

Under Wilson Combat's ownership, New Ultralight Arms has introduced a mini action: the NULA 20S. Here's how it performed for ...

The LASR comes chambered for the 223 Remington/5.56 NATO (18-inch barrel) or the 300 Blackout (16.5-inch barrel), and both feed from detachable AR15 style magazines. The lever operates a quad-bar ...

300 caliber barrel for the lower receiver, as prosecutors state she knew Gooden was loading the semi-automatic, AR-15-style guns with .300 Blackout ammunition, which is a heavier load ammunition ...

Dyrdahl also bought a .300 caliber barrel for the lower receiver, as prosecutors state she knew Gooden was loading the semi-automatic, AR-15-style guns with .300 Blackout ammunition, which is a ...

300-caliber barrel for the lower receiver. Dyrdahl knew Gooden was loading the semiautomatic AR-15-style firearms with .300 Blackout ammunition, which is a heavier load ammunition that has an ...

The Chevy Super Sport badge has become the mark of legends. In that long legacy of performance, here's every Chevy sporting ...

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