AR-556 carbine chambered in 6.8 SPC with a 16-inch barrel and M-LOK handguard. The 6.8 SPC cartridge improves terminal performance over 5.56mm at intermediate ranges while fitting in a standard AR-15-size receiver with a caliber-specific bolt and magazine. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 6.8 SPC Capacity: 25 Year introduced: 2022, USA Weight: 6.6 oz Overall length: 32.3" Status: Active Intended use: Hunting, Patrol, Range