300 Blackout Barrels

Rainier Arms Match Series 300BLK AR-15 Threaded Barrel 14.5 inch Pistol Length 1-8 Twist 5/8 X 24 Nitride Black Medium

Rainier Arms Match Series 300BLK AR-15 Threaded Barrel 8.5 inch Pistol Length 1-8 Twist 5/8 X 24 Nitride Black Small

Rainier Arms Rellim Arms AR-15 Take Down Upper Receiver Assembly Combo Black

Rainier Arms Match 300BLK Barrel 16in 1-8 Twist 5/8x24 Silver Medium

Rainier Arms Match 300BLK Barrel 14.5in 1-8 Twist 5/8x24 Silver Small

Rainier Arms Match 300BLK Barrel 10.5in 1-8 Twist 5/8x24 Silver Small

Rainier Arms Match 300BLK Barrel 8.5in 1-8 Twist 5/8x24 Silver Small

Rainier Arms Select 300BLK Barrel 16in 1-7 Twist 5/8x24 Black Medium

7.5" .300 BLK 1:7 Black Nitride Barrel

Maxim Defense Industries PDX Kit .300 AAC Blackout 5.5 Barrel Upper and Brace

Sons of Liberty Gun Works SOLGW East India 5.56mm 13.9" Gas Pistol Starter Kit EIC-13.9-300

Sons of Liberty Gun Works M4-L89 .300 BLK 8.5" Bbl L89 Rail A2FH Liberty Fighting Bbl & Mil-Spec Upper Receiver U-M4L89-300-85-A2

Anderson Manufacturing Heavy Rifle Barrel 300 Blackout 7.5 Barrel

DRD Tactical .300 AAC 16" Barrel

ONE OH-BR02 16" PSTL GAS M4 CONTR BRL 300BO

Tactical Kinetics Barrel AR-15 .300 AAC BLK 10.5in Medium Contour Pistol Length Gas 1-8 Twist Black Nitride

Tactical Kinetics Barrel AR-15 .300 AAC BLK 16.25in Medium Contour Pistol Length Gas 1-8 Twist Black Nitride

Tactical Kinetics Barrel AR-15 .300 AAC BLK 8.5in Medium Contour Pistol Length Gas 1-7 Twist Black Nitride

BARREL SCAR 15P 300BLK 7.5" #

Proof Research AR-15 300 Blackout Threaded AR Barrel Standard Standard 12.5 in Gas Length Pistol 7 Twist Pxt 2.8 Weight Silver

Noveske AR-15 N4 Diplomat Complete Upper Receiver 300 AAC Blackout 7.94" Barrel NSR-7 M-LOK Handguard Tiger Eye Brown

Noveske Diplomat AR-15 Barrel 300 AAC Blackout 7.94" Medium Contour 1:7" Twist Bead Blasted Stainless

Noveske Lo-Pro Gas Block 300 AAC Blackout Barrel 12.5in Leonidas Pistol Length Stainless .750 Gas Block Headspaced Bolt 0

CMMG Dissent Mk4 .300BLK 16.1in Empire Profile Upper Group Armor Black