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Aero Precision 16" .300 Blackout CMV Barrel, Pistol Length - APRH100173C
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Aero Precision M4E1 Complete Upper, 10" .300 Blackout Barrel, EM-9 Gen 2 Handguard - Anodized Black - APAR640221M4
Aero Precision M4E1 Enhanced 10" .300 Blackout Complete Upper Receiver with 9" Quad Rail - Anodized Black - AP
Aero Precision M4E1 Enhanced 10" .300 Blackout Complete Upper Receiver with 9" Quad Rail - Cerakote FDE - APAR
Ballistic Advantage 10" .300 Blackout Pistol Length AR-15 Barrel, Modern Series 1:7 Twist - BABL300006M
Ballistic Advantage Modern Series 9" .300 Blackout Pistol Length AR-15 Barrel 1:7 Twist - BABL300004M
Aero Precision - 10" .300 Blackout CMV Barrel 1:7 Twist 5R Rifling - APRH100063C
Adams Arms FGAA01364 P2 300 Blackout 16" Black Nitride Barrel, Aluminum Black Receiver, AARS M-LOK Handguard for A
Ballistic Advantage Performance Series 10.3" .300 Blackout Hanson Profile Pistol Barrel with Low Profile Gas Block
Noveske 7000031 Lo-Pro Gas Block Barrel 300 AAC Blackout/Whisper (7.62x35mm) 8.5" Stainless Steel
Anderson Manufacturing 300 Blackout 16" Barrel - 1:7 Twist - M4 Medium Contour - Carbine Length Gas System - B2-K00
Anderson .300BLK 7.5" HBAR Profile Barrel Kit 1:7 Twist w/ Barrel, Gas Block, Gas Tube, and Flash Hider - Phosphate
Noveske 7000034 Lo-Pro Gas Block Barrel 300 AAC Blackout/Whisper (7.62x35mm) 10.5" Stainless Steel
AR-15 7.5" Heavy Barrel, .300 Blackout, 1:7, Parkerized
Ballistic Advantage Modern Series 10.5" .300 Blackout, Pistol Length, 1:7 Barrel - BABL300008M
Ballistic Advantage Modern Series 8" .300 Blackout AR-15 Barrel, Pistol Length Gas System, 1:7 Twist - BABL300001M