5.56x45mm NATO Barrels

Ballistic Advantage AR-15 Barrel 5.56x45mm NATO 16" Government Contour 1:7" Twist QPQ

SilencerCo Charlie Flat Front Cap 5.56mm for SilencerCo Chimera, Saker Steel Matte

Rugged Suppressors Front Cap 5.56 Black

SilencerCo Bravo 9mm Direct Thread Mount 5/8"-24 for SilencerCo Harvester, Hybrid, Omega Titanium

SilencerCo Bravo 9mm Direct Thread Mount 1/2"-28 for SilencerCo Harvester, Hybrid, Omega Titanium

AR-STONER AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 10" Barrel

Rosco Manufacturing Bloodline AR-15 Barrel 5.56x45mm NATO 11.5" M4 Contour 1:7" Twist Black Nitride

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 11.5" Cold Hammer Forged Barrel M-LOK Black

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm with Pinned 14.5" Cold Hammer Forged Barrel M-LOK Black

Faxon Duty Series AR-15 Barrel 5.56x45mm NATO 16" Gunner Contour 1:8" Twist Nitride with Pinned Gas Block

Noveske Crusader AR-15 Barrel 5.56x45mm NATO 12.5" 1:7" Twist Stainless with Low Profile Gas Block and Gas Tube

Noveske Infidel AR-15 Barrel 5.56x45mm NATO 13.7" Medium Contour 1:7" Twist Bead Blasted Stainless with Low Profile Gas Block

Ballistic Advantage AR-15 Barrel 5.56x45mm NATO 16" Hanson Contour 1:7" Twist Phosphate with Low Profile Gas Block

Geissele USASOC URG-I Near Clone AR-15 Pistol Complete Upper Receiver Improved Complete 5.56x45mm NATO 10.3" Barrel with Surefire SF4P

LBE Unlimited AR-15 Ready Build Kit Complete Upper 5.56 / .223 Rem 7.5 Barrel

Geissele AR-15 Super Duty MOD1 Pinned and Welded Complete Upper Receiver 5.56x45mm 13.9" Cold Hammer Forged Barrel M-LOK Black

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 11.5" Cold Hammer Forged Barrel M-LOK DDC

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm with Pinned 14.5" Cold Hammer Forged Barrel M-LOK DDC

Geissele AR-15 Super Duty MOD1 Pinned and Welded Complete Upper Receiver 5.56x45mm 13.9" Cold Hammer Forged Barrel M-LOK DDC

Ballistic Advantage Performance Series Barrel Black 5.56 11.3 Carbine

IWI Non-Vented Front End Cap 5.56 / 6mm

Geissele AR-15 Super Duty MOD1 Complete Upper Receiver 5.56x45mm 10.3" Cold Hammer Forged Barrel M-LOK DDC

Energetic Armament Vox End Cap 5.56

Noveske Recon Match AR-15 Barrel 5.56x45mm NATO 16" Medium Contour 1:7" Twist Bead Blasted Satin Grey with Headspaced Bolt and Low Profile Gas Block