AR Parts in 5.56x45mm NATO

WMD Guns Accent Build Kit 5.56 Cobalt

WMD Guns Accent Build Kit 5.56 Black Cherry 1-ACCKIT-Black Cherry

WMD Guns Accent Build Kit 5.56 Battle Grey 1-ACCKIT-Battle Grey

Ar-15 Ranger Barrels 5.56mm - Ranger Barrel W/Intermediate Gas Tube & Block 5.56 16'''' Round

Vltor Mod 3 Large LR-308 Charging Handle Black

VLTOR Flash Hider - VC:A2

VKTR Industries VK-1 5.56 NATO Piston Complete Upper Receiver Group

VKTR Industries Hammer Forged DI 5.56 NATO AR-15 Barrel w/ Custom Gas Block - 16.1"

VKTR Industries Hammer Forged DI 5.56 NATO AR-15 Barrel w/ Custom Gas Block - 13.7"

VKTR Industries Hammer Forged DI 5.56 NATO AR-15 Barrel w/ Custom Gas Block - 10.5"

AR-15 10.5\" M4 Contour Barrel, 5.56 NATO, 1:7, Parkerized

AR-15 .223/5.56 NATO 7.5\" Parkerized M4 Proflie Barrel - 1:7 Twist - Pistol Length Gas System

AR-15 16\" M4 Barrel, 5.56 NATO, 1:8 Twist, Parkerized

AR-15 16\" M4 Contour Barrel, 5.56 NATO, 1:9, Parkerized

AR-15 16\" M4 Contour Barrel, 5.56 NATO 1:7, Parkerized

AR-15 16\" Contour Barrel, 5.56 NATO, 1:7, Parkerized

AR-15 16\" Contour Barrel, 5.56 NATO, 1:7 TWIST, Black Nitride

AR-15 16\" Contour Barrel, 5.56 NATO, 1:7, Black Nitride

AR-15 16\" M4 Contour Barrel, 5.56 NATO, 1:8, Parkerized

AR-15 16\" Hammer Forged M4 Barrel, 5.56x45mm, 1:8, Carbine Length, Black Nitride

U.S. Ballistics Competition Muzzle Brake 1/2"-28 Thread AR-15 223 Rem, 5.56mm Steel Matte

Tacfire AR-15 Pistol Kit 5.56x45mm 7.5\" Barrel - PK556-LPK-7

Surefire Optimized BCG w/ Buffer & Spring

Superlative Arms Titanium Adjustable Gas Block Bleed Off (Solid) - Dark DLC