Advanced Armament AR-15 Adv Armament Blackout 300 AAC Upper
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Type: Complete Gas Impingement
Caliber: 300 AAC Blackout/Whisper (7.62x35mm)
Sights: None (Optic Ready)
Barrel Length: 12.5"
Barrel Material: 4150 Steel
Twist: 1:7
Barrel Description: Threaded
Barrel Finish: Black
Receiver Description: A3
Receiver Finish: Black