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Aero Precision M4E1 Enhanced 16" .300 Blackout Complete Upper Receiver with 15" Enhanced M-LOK Handguard - Cer
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Aero Precision 16" .300 Blackout CMV Barrel, Pistol Length - APRH100173C
Aero Precision M4E1 Threaded 16" .300 Blackout Complete Upper Receiver with 15" ATLAS S-ONE Handguard - Anodiz
Ballistic Advantage Modern Series 8" .300 Blackout AR-15 Barrel, Pistol Length Gas System, 1:7 Twist - BABL300001M
Ballistic Advantage Modern Series 10.5" .300 Blackout, Pistol Length, 1:7 Barrel - BABL300008M
Proof Research 100530 AR-Style Barrel 300 Blackout 12.50" Pistol Length Gas System 1:7" Twist 5 Grooves, 5/8&q
Proof Research 100523 AR-Style Barrel 300 Blackout 12.50" Pistol Length Gas System 1:8" Twist 5 Grooves, 5/8-2
Noveske 7000031 Lo-Pro Gas Block Barrel 300 AAC Blackout/Whisper (7.62x35mm) 8.5" Stainless Steel
Aero Precision 10" .300 Blackout CMV Barrel, Pistol Length with .750 Adjustable Gas Block, SS Pistol Length Gas Tub
Aero Precision M4E1 Enhanced 10" .300 Blackout Pistol Length Complete Upper Receiver with 9.3" Enhanced Handgu
Noveske 7000034 Lo-Pro Gas Block Barrel 300 AAC Blackout/Whisper (7.62x35mm) 10.5" Stainless Steel
Anderson .300BLK 7.5" HBAR Profile Barrel Kit 1:7 Twist w/ Barrel, Gas Block, Gas Tube, and Flash Hider - Phosphate