5.56x45mm NATO Barrels

AIMS 74 Barrel- Chrome Lined 556x45

Galil ARM Barrel - CZ Factory New Old Stock

Colt 10.3" CQB 5.56 Upper Receiver - MK18 Clone

Original Colt M16 Barrel -5.56x45mm

Colt IAR 5.56 Upper Receiver Assembly 11.5" Barrel

FB Beryl 5.56x45mm Barrel Trunnion

Dirty Bird 10.5 Government Carbine 5.56 M-LOK Upper Assembly - V3, OD Green

Dirty Bird 10.3" 5.56 NATO 1:8 V2 M-LOK Upper Assembly - Midnight Bronze

Dirty Bird 10.3" 5.56 NATO 1:8 V2 M-LOK Upper Assembly - FDE

Dirty Bird 20" M16A1 Enhanced 5.56 Retro Upper Assembly - M4 Feed Ramps

BCM 18" 5.56 NATO 1:8 Stainless Steel Barreled Upper - 15" M-LOK MCMR Rail

10.5" 5.56 Stainless Steel Carbine 1:7 Medium Barrel

8.5" 1:7 5.56 Stainless Steel M4 Pistol Barrel

11.5" 5.56 NATO 1:7 Twist 4150V Black Nitride Carbine Barrel

Juggernaut Tactical AR-15 5.56 Black Stainless Midlength Fluted Barrel 18" 1:8 Twist

Juggernaut Tactical AR-15 5.56 Stainless Midlength Fluted Barrel 18" 1:8 Twist

Juggernaut Tactical AR-15 5.56 Stainless Midlength Fluted Barrel 16" 1:8 Twist

16" 5.56 HBAR 1:9 Twist Black Nitride Carbine Barrel

20" 5.56 Chrome-Lined Lightweight Contour 1:9 Rifle Length Barrel w/ FSB Pho

20" 5.56 Lightweight Contour 1:9 Rifle Length Barrel w/ FSB Phosphate

Premium Series 10.5" 5.56 NATO 1:7 Black Nitride Carbine Length Barrel

20" 5.56 NATO 1:7 Twist Parkerized Heavy Rifle Barrel

16" 5.56 NATO 1:7 Carbine Lightweight Barrel - Phosphate

Ballistic Advantage 14.5" 5.56 Government Profile Midlength AR-15 Barrel Modern Series w/ FSB Triangle Handguard Cap and Delta Ring Assembly & Pinned BCM A2X Flash Hider 1:7 Twist