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Ballistic Advantage Modern Series 10.5" .300 Blackout, Pistol Length, 1:7 Barrel - BABL300008M
TacFire BU-300-8 AR-15 Complete Upper .300 AAC Blackout 8" Barrel Black Finish
Aero Precision 16" .300 Blackout CMV Barrel, Pistol Length - APRH100173C
Ballistic Advantage Modern Series 9" .300 Blackout Pistol Length AR-15 Barrel 1:7 Twist - BABL300004M
CMMG Barrel Sub-Assembly 30DC30A 16.1" 300 AAC Blackout 416 Stainless Bead Blasted AR-15
Rosco Manufacturing Bloodline BL-16-HB-300BLK-8-P 16" Barrel 300 Blackout 4150 CMV Nitride AR-15 Compatible
Radian Weapons R0027 Complete Upper 9" 300 Blackout Black
DPMS Kitty Kat DP51655170308 AR-15 Compatible Upper 300 Blackout 7.5" Barrel Black Nitride Finish.
Q LLC Sugar Weasel AR-15 Upper, 300 Blackout, 13" Barrel, Black Finish, MPN ACCSW30013INUPPER.