5.56x45mm NATO Barrels

Patriot Ordnance Factory Renegade 5.56 Upper, 10.5" Barrel, 9 Position Direct Impingement Dictator, 9.5" Rail, BLACK ANODIZED

FN SRP G2 AR-15 Complete Upper Receiver 5.56x45mm NATO 11.5" Barrel

Ar-15 Hammer Forged M4 Barrels - Ar-15 Hf M4 Barrel 14.7 Carbine 5.56mm

Rock River Arms 14.5in R4 CL 1-7 Full Auto Barrel Black

Rock River Arms 16in R4 CM LTWT Barrel Assembly Black

Rock River Arms 16in R4 CM LTWT Barrel Black

Rock River Arms 10.5in CL 1-7 Full Auto Barrel Assembly Black

Rock River Arms 16in Car CL LTWT Barrel Assembly Black

Rock River Arms 16in Car CL LTWT Barrel Black

Rock River Arms 16in R4 1-9 CL LTWT Barrel Assembly Black

Rock River Arms 16in R4 1-9 CL LTWT Barrel Black

Rock River Arms 16in Mid LTWT CL Barrel Assembly Black

Rock River Arms 16in Mid LTWT CL Barrel Black

Rock River Arms 7in Pistol CM Barrel Assembly w/A2 Front Sight Black

Rock River Arms 7in Pistol CM Barrel Black

Rock River Arms 16in CAR CM Barrel Assembly Black

Rock River Arms 16in CAR CM Barrel Black

Rock River Arms 14.5in CL 1-9 Barrel Assembly Black

Rock River Arms 10.5in CL 1-7 Full Auto Barrel Black

Rock River Arms Completed Pistol Upper Receiver A4 .223/5.56mm 7 Inch Barrel 1-9 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hide Black

DoubleStar 16in 1x9 DS-4 Gov't Barrel with Forged Sight Base Black

DoubleStar AR-15 Barrel 5.56x45mm NATO 16" Heavy Contour 1:9" Twist Black Parkerized Chrome Lined

DoubleStar AR-15 Barrel 5.56x45mm NATO 16" Lightweight Contour 1:9" Twist Black Parkerized

DoubleStar 16in 1x8 SS WAG Air Gauged Barrel with Gas Block Black