The Live Free Armory LF-15 also known as the Battle Rifle Lite (BRL) is a purpose-built AR-15 style rifle engineered for accuracy, reliability, and versatility. Whether you're on the range, in the field, or running a home defense setup, the LF-15 is ready for any situation. Precision-Built from the Ground Up. The LF-15 features receivers machined from custom 6061-T6 billet aluminum and is built around a 16-inch barrel chambered in 5.56 NATO with a 1:7 twist rate to maximize accuracy. The barrel is crafted from 4150 Chrome Moly Vanadium Steel with a black nitride finish for exceptional durability and corrosion resistance.