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CMMG 30D810A Barrel Sub-Assembly 300 AAC Blackout/Whisper (7.62X35mm) 8" Nitrided
CMMG .300 Blackout (7.62x35mm) Medium Taper Proflie Black Nitride AR-15 16.1" Barrel, 1:7 Twist, Carbine Length Gas
CMMG Barrel Sub-Assembly 55DC70A 16.1" 5.56 NATO 4140 Chromoly Nitride AR-15 Compatible
CMMG Barrel Sub-Assembly 55DE10A 16.1" 5.56x45mm NATO 4140CM Nitrided M4 Profile for AR-15.
CMC Triggers AR Barrel BBL556002 10.5" 5.56 NATO 4150 Chrome Moly Vanadium Black Nitride Fits AR-15.
Rosco Manufacturing Bloodline 5.56 NATO 14.5" Nitride Barrel - BL-145-M4-556-7-C
Rosco Manufacturing Bloodline 5.56 NATO 14.5" Nitride Barrel - BL-145-GVT-556-7-M
Rosco Manufacturing Bloodline BL-16-M4-556-7-C 16" 5.56 NATO Nitride 4150 CMV Barrel for AR-15 M4
Rosco Manufacturing Bloodline BL-16-HB-556-7-C 16" 5.56 NATO Heavy Barrel Nitride 4150 CMV for AR-15
Rosco Manufacturing K9 13.95" 5.56 NATO 416R Stainless Nitride Barrel for AR-15
Rosco Manufacturing K9 11.5" 5.56 NATO Nitride 416R Stainless Barrel for AR-15