AR Parts in 5.56x45mm NATO

Superlative Arms AR-15 Gas Piston Conversion Kit Carbine Length with 0.750" Clamp On Low Profile Gas Block

Noveske Commando 5.56x45mm NATO AR-15 Barrel 11.5" Mid-Length .750 Gas Block Stainless Steel

Noveske AR-15 Lower Parts Kit

Aero Precision AR-15 M4E1-E Barreled Upper Receiver 5.56x45mm NATO 14.5" Barrel 12.7" ATLAS R-ONE Handguard with Pinned Gamma SL Muzzle Device Black

Aero Precision M4E1 Standard Assembled AR-15 Upper Receiver Aluminum Anodized Kodiak Brown

Aero Precision AR-15 Barreled Upper Receiver 5.56x45mm NATO 16" Barrel MOE SL Mid-Length Handguard Flat Dark Earth

Knights Armament MK 12 Mod 1 RAS AR-15 Picatinny Handguard 12" Black

Knights Armament M5 RIFLE RAIL ADAPTER SYSTEM 556

Radian Weapons Model 1 Upper Flat Dark Earth 5.56

Timber Creek Outdoors Pencil Barrel 5.56 16 Threaded Barrel

Faxon Duty Series AR-15 Barrel 5.56x45mm NATO 14.5" Gunner Contour 1:8" Twist Nitride with Pinned Gas Block

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

Faxon Duty Series AR-15 Barrel 300 AAC Blackout 10.5" Gunner Contour 1:8" Twist Nitride with Pinned Gas Block

Faxon Duty Series AR-15 Barrel 5.56x45mm NATO 10.5" SOCOM Contour 1:8" Twist Nitride with Pinned Gas Block

Faxon Duty Series AR-15 Barrel 5.56x45mm NATO 16" Pencil Contour 1:8" Twist Nitride Integral Flash Hider

Aero Precision BREACH AR-15 Ambidextrous Charging Handle Small Olive Drab

LMT Defense Monolithic Carbine Length Barrel 5.56 10.5

BCM Gunfighter PMCR AR-15 M-LOK Handguard Mid-Length Black

Bravo Company Enhanced Lightweight Barrel Assembly 5.56 14.5

Luth-AR Vintage Style Firing Pin Retainer .223 Remington/5.56x45mm, Chrome

JE Machine Free Float Clamp On AR-15 M-LOK Quadrail Handguard 12" Black

Armaspec S3 Enhanced AR-15 Trigger Guard Aluminum Black

CMMG AR-15 Bolt Cam Pin

TacFire Complete Upper 5.56 16 Barrel M-LOK Handguard