Alexander Arms

Alexander Arms is an American manufacturer of firearms. It is most known for the .50 Beowulf cartridge designed by its founder, Bill Alexander. The company produces AR-15s chambered in .50 Beowulf and 6.5mm Grendel, which it designed in cooperation with Competition Shooting Sports. Alexander Arms also produces both upper receivers and complete rifles, chambered in .17 HMR, for the AR-15 platform. The company also produces ammunition and accessories for its products.

.50 Beowulf [12.7 x 43 mm Rb]
The 50 Beowulf is a powerful cartridge designed to work in standard military arms. It can penetrate hard targets with relative ease such as engine blocks or cinder block walls. The .50 Beowulf is serious stopping power.
 * Beowulf 16.5 Entry
 * Beowulf 16.5 Precision
 * Beowulf 16.5 Overmatch Plus
 * Beowulf AWS 16 (Advanced Weapon System): 16" barrel with 4-direction Picatinny Rail forend.

6.5 mm Grendel [6.5 x 39 mm]
The 6.5 Grendel is designed based on the needs of benchrest shooters for highly accurate cartridges. (See information found at Ballistic coefficient.)
 * 6.5 Grendel 16 Tactical Carbine: 16" barrel.
 * 6.5 Grendel Lite series: 16", 18", 20", 24" barrel.
 * 6.5 Grendel Advantage series: 20", 24" barrel.
 * GDMR: 20", 24" barrel.
 * Grendel Sniper Rifle: 20", 24" barrel.