AR Parts in 5.56x45mm NATO

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 16in Carbine Length 4150 M4 Barrel 1-7 Twist 14in M-LOK Free Float Hand Guard A2 Birdcage

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 16in Carbine Length 4150 M4 Barrel 1-7 Twist 14in M-LOK Free Float Hand Guard A2 Birdcage

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 16in Carbine Length 4150 M4 Barrel 1-7 Twist 14in M-LOK Free Float Hand Guard A2 Birdcage

Ghost Firearms Elite Complete Upper Receiver 5.56x45 NATO 16in Carbine Length 4150 M4 Barrel 1-7 Twist 14in M-LOK Free Float Hand Guard A2 Birdcage

Criterion Barrels 18in AR-15 Hybrid Rifle Gas System Barrel Chrome-lined Parkerized

Criterion Barrels 16in AR-15 Hybrid Rifle Gas System Barrel Chrome-lined Parkerized

Criterion Barrels 24in AR-15 Bull Rifle Gas System Barrel Stainless Steel

Criterion Barrels 20in AR-15 HBAR Rifle Gas System Barrel SS Stainless Steel

Criterion Barrels 20in AR-15 HBAR Rifle Gas System Barrel Chrome-lined Parkerized

Criterion Barrels 18in AR-15 Fluted Rifle Gas System Barrel Stainless Steel

Criterion Barrels 16in AR-15 HBAR Mid Length Gas System Barrel Chrome-lined Parkerized

Criterion Barrels 18in AR-15 Hybrid Carbine Length Gas System Barrel Stainless Steel

Criterion Barrels 16in AR-15 Hybrid Carbine Length Gas System Barrel Chrome-lined Parkerized

Criterion Barrels AR-15 SBR Ultralight Barrel Mid-Length Gas Chrome-lined 14.5in

Criterion Barrels AR-15 SBR Ultralight Barrel Chrome-lined 12.5in

Sharps Rifle Company Precision 5.56 Nato/ 223 Wylde Sharps Barrel 1-8In With E6 Rifling Black

Guntec USA AR-15 Stubby Slim Compact Flash Can Black/Stainless

Ballistic Advantage 5.56 Bolt Carrier Group BCG Full NiB

Vltor AR15/M16 MUR Hammer Forged Modular Upper Receiver Includes Shell Deflector and Forward Assist Black

Vltor Modular Upper Receiver 223 Rem/5.56 NATO W/out Forward Assist Black

Vltor Modular Upper Receiver 223 Rem/5.56 NATO With Forward Assist Black

WMD Guns AR-15 5.56x45mm NATO 16in M-LOK Upper Receiver Assembly - Left Hand 15in Hanguard NiB-X Silver

WMD Guns AR-15 5.56x45mm NATO 16in M-LOK Upper Receiver Assembly - Left Hand 12in Handguard NiB-X Silver

WMD Guns Upper Assembly Forged AR-15 MLOK HG 15in NiB-X Nickel