5.56x45mm NATO Barrels

Steyr AUG Barrel 20" White 1:9 Twist 1255010766

Steyr AUG Barrel 20" Green 1:9 Twist 1255010762

Stag Arms AR-15 Barrel 5.56x45mm NATO 16" M4 Contour 1:7 Twist Phosphate

Stag Arms Barrel AR-15 Pistol 5.56x45mm NATO M4 Contour 1 in 7" Twist 7.5" Pistol Length Gas Port Chrome Moly Nitride Factory Blemished

Spinta Precision MK18 5.56 NATO Nitride Barrel - 10.3"

Sons of Liberty Gun Works M4-L89 5.56mm 13.7" Bbl Mid Gas L89 Rail P&W HUXWRX XL Mt Liberty Fighting Bbl & Mil-Spec Upper Receiver U-M4L89-556-137-HUX

Sons Of Liberty Gun Works East India Starter Kit 5.56 Barreled Upper w/ FSB - 10.5"

Sons Of Liberty Gun Works M4-EXO3 5.56 AR-15 Complete Upper - 13.7" w/ P&W HuxWrx Muzzle Device

Ar-15 Combat Grade Barrels - 5.56mm Nato 14.5'''' Combat Grade Barrel

Ar-15 Combat Grade Barrels - Combat 5.56x45mm Nato 13.7'''' Gov Profile 1/2''''x28 1-7 Twist

Rosco Manufacturing Bloodline 16" 5.56 Government 1:7 Twist Black Nitride Midlength Barrel w/ FSB

Rosco Manufacturing Bloodline 14.5" 5.56 M4 1:7 Twist Black Nitride Carbine Barrel w/ FSB

Rainier Arms RUC Pro MK2 5.56 NATO Partial Upper Receiver

Rainier Arms RUC PRO MK1 5.56 NATO Partial Upper Receiver

Rainier Arms Rifle Conversion Kit

Rainier Arms Select 5.56 NATO M16A1 AR-15 Barrel - 20"

Rainier Arms Select 5.56 NATO AR-15 Barrel - 18"

Rainier Arms Select 5.56 NATO Dissipator AR-15 Barrel - 16"

Rainier Arms Select 5.56 NATO AR-15 Barrel - 16"

Rainier Arms Select 5.56 NATO AR-15 Barrel - 14.5"

Rainier Arms Select 5.56 NATO AR-15 Barrel - 13.9"

Rainier Arms Select 5.56 NATO AR-15 Barrel - 12.5"

Rainier Arms Select 5.56 NATO AR-15 Barrel - 11.5"

Rainier Arms Select 5.56 NATO AR-15 Barrel - 10.5"