5.56x45mm NATO Barrels

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

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

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

5.56 NATO 16" Parkerized Heavy Barrel 1:7 Twist Carbine Length Gas Syste

16" 5.56 Parkerized 1:7 Carbine Length Barrel

16" 5.56 NATO 1:8 Twist 4150V Black Nitride Mid-Length Barrel

7.5" 5.56 NATO 1:7 Stainless Steel Pistol Length Barrel

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

BCM 16" 5.56 NATO 1:7 Enhanced Light Weight Barreled Upper - 15" M-LOK MCMR Rail

Ballistic Advantage 10.5" 5.56 Government Profile Carbine AR-15 Barrel Modern Series w/ FSB and Circular Handguard Cap 1:7 Twist

Rosco Manufacturing Bloodline 11.5 Carbine 5.56 Sauce Pack

Centurion Arms Hammer Forged 5.56 Lightweight Mid-Length Barrel - 16" 1:7 Twist

Centurion Arms Hammer Forged 5.56 Mid-Length Barrel - 14.5" 1:7 Twist

Centurion Arms Hammer Forged 5.56 Carbine Barrel - 12.5" 1:7 Twist

Centurion Arms Hammer Forged 5.56 Carbine Barrel - 11.5" 1:7 Twist

Centurion Arms MK12 18" 5.56 NATO 1:7 416R Stainless Steel Rifle Length Barrel

Centurion Arms RECCE 5.56 NATO 1:7 R5 416R Stainless Steel Mid-Length Barrel - 14.5

Centurion Arms RECCE 5.56 NATO 1:7 R5 416R Stainless Steel Mid-Length Barrel - 16"

Modern Armory 16" 5.56 NATO 1:7 Midlength Duty Grade Barrel

Green Mountain 5.56 AR-15 Barrel 20" M16 A1 Phosphate

Green Mountain 5.56 AR-15 Barrel 16" M4 Nitride

Green Mountain 5.56 AR-15 Barrel 16" M4 416SS Passivated