5.56x45mm NATO Barrels

16" 5.56 NATO 1:9 Twist Phosphate Carbine M4 Barrel

14.5" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Carbine M4 Barrel

20" 5.56 NATO 4150 CMV Black Nitride CHF Govt 1:8 Rifle Length Barrel

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

14.5" 5.56 Chrome-Lined M4 1:9 Carbine Length Barrel w/ FSB - Phosphate

16" 5.56 NATO 1:8 Carbine Length M4 Barrel - Black Nitride

16" 5.56 NATO 1:7 Mid-Length Lightweight Barrel - Black Nitride

13.9" 5.56 NATO 1:7 Black Nitride Midlength Pencil Barrel

NBS 16" 5.56 NATO 1:7 Twist HBAR Mid-Length Stainless Steel Barrel

16" 5.56 16" Parkerized Carbine Heavy Barrel 1:9 Twist

16" 5.56 NATO 1:7 Twist Black Nitride Mid-Length Pencil Barrel

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

NBS 16" Billet Slick Side 5.56 Parkerized Mid-Length 1:7 M-LOK Complete Upper

Ballistic Advantage 14.5" 5.56 M4 Profile Carbine AR-15 Barrel w/ FSB Circular Cap and Delta Ring Assembly 1:7 Twist

16" 5.56 NATO 1:7 Twist HBAR Fluted Mid-Length Stainless Steel Barrel

7.5" 5.56 NATO 1:7 Black Nitride Pistol Length Barrel

7.5" 5.56 NATO 1:7 Parkerized Pistol Length Barrel

16" 5.56 NATO 1:7 Twist Black Nitride Mid-Length Barrel

NBS 14.5" Mid-Length 5.56 NATO 1:7 Complete Upper w/ Front Sight Base

Ballistic Advantage 14.5" 5.56 Government Profile Midlength AR-15 Barrel Modern Series w/ FSB Circular Handguard Cap and Delta Ring Assembly 1:7 Twist

16" 5.56 NATO 1:7 Twist Mid-Length Parkerized Barrel

14.5" 5.56 NATO 1:7 Twist Black Nitride Mid-Length Barrel

LMT 5.56 Chrome Lined M4 AR-15 Barrel with A2 FSB - 14.5" 1:7 Twist

LMT 5.56 Chrome Lined M4 AR-15 Barrel with A2 FSB - 10.5" 1:7 Twist