5.56x45mm NATO Gun Parts

Rock River Arms A4 AR-15 Complete Upper Receiver 223 Remington (Wylde) 20" Barrel

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

Aero Precision M4E1 Pro Ambidextrous AR-15 Stripped Lower Receiver OD Green

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

Franklin Armory BFSIII Elite Libertas Complete Lower w/ Binary Trigger 30-Rounds

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

Spikes Tactical Viking Logo Lower Black 5.56 / .223 Rem

Spikes Tactical STU5435-R2S ST-15 Enhanced Mid Length Upper 5.56 16In

BCM MK2 RMS-M1T0 Mod-0 AR-15 Complete Lower Receiver Anodized Flat Dark Earth

Midwest Industries AR-15 Pistol Barreled Upper Receiver 5.56x45mm NATO 10.5" Barrel

Primary Weapons Systems MK1 Mod 2-M Complete Lower 5.56 30-Rounds

CMMG Dissent MK4 Upper 5.56 10.5 Barrel

Armaspec Lower Parts Kit Blue for AR-15

TacFire Unassembled Rifle Kit 5.56 NATO / .223 Rem 16 Barrel

Lancer Systems 1-Piece Adaptive AR-15 Magwell Aluminum Black

Lbe Unlimited Ar137rbk Upper Build Kit 223 Remington

AMEND2 Mod-2 AR15 223/5.56 30rd Magazine FDE

TacFire AR Build Kit Lower 5.56 7.5 Barrel

Colt AR-15 Pistol Complete Upper Receiver 5.56x45mm NATO 14.5" Barrel

One Horse OH-15 A3 Stripped Upper Multi-Cal

B&T SF Adapter Muzzle Device Suppressor Mount 5.56x45mm 1.375x24 Threaded Titanium Black

Radian Weapons A-DAC 15 Builder Kit Black 5.56 8.5 Handguard

Yankee Hill Machine Model 57 AR-15 Stripped Billet Lower Receiver Black