AR Parts in 5.56x45mm NATO

ABC RIFLE COMPANY AR-15 Rifle Build .223/5.56x45mm NATO 16in Barrel 15in M-LOK Handguard Upper Receiver Parts 1/2x28 Black

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 Black

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 Micro Pistol Build 5.56x45mm NATO 5in Barrel 4in M-LOK Handguard Upper Receiver White

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

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

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

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

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

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

ABC RIFLE COMPANY AR-15 5.56x45mm NATO 16in Barrel 12in Quad Rail Upper Receiver 1-8 Twist 1/2x28 A2 Style Muzzle Brake Nitride Cerakote Sniper Grey

VKTR Industries VK-1 5.56x45mm NATO 11.5 inch Upper Receiver Heavy Carbine Length 1-7 Twist FDE

VKTR Industries VK-1 5.56x45mm NATO 11.5 inch Upper Receiver Heavy Carbine Length 1-7 Twist Armor Black

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

VKTR V31100916607CA FRGD 556 10.5 TB*CA* ARMBLK

VKTR VK1 COMPLETE UPPER 5.56 NATO 13.7IN P&W BBL OR FDE CERAKOTE

Q Honey Badger Two-Piece Bolt Carrier Group Black

LaRue Tactical Stealth 2.0 Assembled AR-15 Upper Receiver - 13" - FDE

LaRue Tactical Match Grade Complete AR-15 Upper Receiver - 5.56 - 16" - FDE

LaRue Tactical Match Grade Complete AR-15 Upper Receiver - 5.56 - 12" - FDE

LaRue Tactical Match Grade Complete AR-15 Upper Receiver - 5.56 - 12"

Harrington & Richardson M16A2 Stripped Upper Receiver w/ M4 Feed Ramp, Black