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Smith & Wesson 812012 M&P15 300 AAC Blackout/Whisper (7.62x35mm) 16" 4140 Steel Threaded Black Barrel Finis
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Noveske 7000031 Lo-Pro Gas Block Barrel 300 AAC Blackout/Whisper (7.62x35mm) 8.5" Stainless Steel
Noveske 7000034 Lo-Pro Gas Block Barrel 300 AAC Blackout/Whisper (7.62x35mm) 10.5" Stainless Steel
Ballistic Advantage Modern Series 9" .300 Blackout Pistol Length AR-15 Barrel 1:7 Twist - BABL300004M
CMMG 30B12BBAB Resolute MK4 300 Blackout 16.10", Armor Black, M-LOK Free-Float Handguard for AR-Platform
TacFire AR Barrel 300 Blackout 16" Black Nitride