FEATURES: Caliber: .300 AAC Blackout (300 BLK) Barrel: 4140 Chromoly, 16.25" (1/8 RHT with 5/8-24tpi Muzzle Threads) Receivers: Captive push-pin takedown Aerospace grade 7075-T6 Stock: Black Polymer Handguard: Free-Floating FightLite M-Lok Magazine: Can accept any AR15/M16 Magazine Origin: 100% Made in USA INCLUDES: Chamber Flag, Rifle Lock, Muzzle Thread Protector, Operator's Manual Mfg: Fightlite Industries