5.56x45mm NATO Barrels

Luth-AR M4 Government Barrel 5.56 14.5 Threaded Barrel

Luth-AR Mark 12 Kit Minus Lower Receiver w/ Fixed Stock 5.56mm 27in 18in Government Rifle 1x9 1/2x28 Picatinny Key MOD A2 Flash Hider Anodized

Luth-AR Mark 12 Complete Upper Barrel Receiver Assembly 5.56 mm 27in 18in Government Rifle 1x9 1/2x28 PicatinnyKey MOD A2 Flash Hider Anodized

Howe Barrel 5.56 14.7 Fluted Mid Gas Stainless 1-8

Seekins 223 16" HIT PRO Havak Hit / 1:8 Twist Barrel 0010160187-F

Seekins Precision AR15 .223/5.56 11.5" 1:8" 1/2"x28 Threaded SS M4 Barrel 0010120065-F

TacFire AR-15 Carbine-Length Gas .223 / 5.56 1:8 Nitride Barrel - 16"

SANTAN 1836 IRNCLD 5.56 11.5" CRB BL

BattleHawk Armory AR-15 16 Pencil Profile 5.56mm, 15 Handguard, Black, Upper Receiver

BattleHawk Armory AR-15 5.56mm 16 Pencil Profile, Carbine Length Gas, Barrel

BattleHawk Armory AR-15 5.56mm 16 Gov't Profile, Mid Length Gas, Barrel

CMC AR15 Barrels

CMC AR15 Barrels

ABC RIFLE COMPANY AR-15 Micro Pistol Build 5.56x45mm NATO 5in Barrel 4in M-LOK Handguard Upper Receiver Bronze

ABC RIFLE COMPANY AR-15 Micro Pistol Build 5.56x45mm NATO 5in Barrel 4in M-LOK Handguard Upper Receiver Tungsten

ABC RIFLE COMPANY AR-15 Micro Pistol Build 5.56x45mm NATO 5in Barrel 4in M-LOK Handguard Upper Receiver Olive Drab Green

ABC RIFLE COMPANY AR-15 .223 5.56 Complete Build 16in Barrel 15in Lightweight Hybrid M-LOK Handguard Upper Receiver 1-10 Twist 1/2x28 A2 Style Muzzle

WBP 5.56 AK BARREL

VKTR Industries VK-1 5.56x45mm NATO 13.7 inch Upper Receiver Heavy Carbine Length 1-7 Twist No Muzzle Device Armor Black

BARREL SUB ASSM 14.5 MT 4140CM SBN 5.56MM

Harrington & Richardson Retro 723 14.7" AR-15 Barrel Assembly 5.56 1:7 Carbine Length

Harrington & Richardson Retro M16A1 Stripped 20" Barrel Assembly

Shaw Barrels AR-15 Barrel 5.56x45mm NATO 18" Lightweight Contour 1:7" Twist Nitride

Shaw Barrels AR-15 Barrel 5.56x45mm NATO 16" Lightweight Contour 1:7" Twist Nitride