5.56x45mm NATO Upper Receivers

Desert Tech MDRx 5.56 NATO/.223 Rem 16" 30rd SE Conversion Kit MDR-CK-B1630-SE

Bcm Mid-Length Complete Upper Receiver W/A2 Flash Hider For Ar15 - 5.56mm 16''''bbl Mid-Length Complete Upper W/A2 Flash Hider

5.56 Mid-Length Elw Complete Upper Receiver W/Mod3 Comp For Ar15 - 5.56mm 14.5'''' Mid-Length Elw Compl Upper W/Mod 3 Comp

5.56mm Mid-Length Complete Upper Receiver W/Mod3 Comp For Ar15 - 5.56mm 14.5'''' Mid-Length Compl Upper Rcvr W/Mod 3 Comp

5.56mm Carbine Complete Upper Receiver W/A2 Flash Hider For Ar15 - 5.56mm 11.5'''' Carbine Completeupper Rcvr W/A2 Flash Hider

Adams Arms P2 AARS Upper 5.56 NATO / .223 Rem 16 Barrel

Luth-AR A1 Slick Side Retro Complete AR-15 Upper Receiver - 5.56 - 20"

Luth-AR 16 in Light Weight 1-7 kit minus Lower Receiver w/coll. Stock M-Lok Black Carbine

Luth-AR 16 in Light Weight kit minus Lower Receiver w/coll. Stock M-Lok Black Carbine

Ar-15 14.5'''' M4 Government Upper Receiver 1-9 - Ar-15 14.5'''' M4 Upper Receiver 1-9

Stag Arms AR-15 A3 Flattop Upper Receiver Assembly Direct Impingement Type 3 Hard Coat Anodized Right Hand Black

Ar-15 A3 Upper Receiver Assembly 5.56mm Left Hand

SEEKINS IRMT-R BILLET UPPER BLK

K-Spec 5.56x45mm Nato Complete Upper Receiver - K-Spec 5.56 Nato 14.5'''' Bbl 1-7 Twist Complete Upper Black

K-Spec 5.56x45mm Nato Complete Upper Receiver - K-Spec 5.56 Nato 13.9'''' Bbl 1-7 Twist Complete Upper Black

Faxon AR-15 ION Series Complete Upper Receiver Assembly 5.56x45mm NATO 16" Barrel

Faxon AR-15 ION Series Complete Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Suppressor Ready

Faxon AR-15 ION Series Upper Receiver Assembly 5.56x45mm NATO 16" Barrel

Faxon AR-15 ION Series Upper Receiver Assembly 5.56x45mm NATO 16" Barrel Suppressor Ready

Faxon AR-15 ION Series Upper Receiver Assembly 5.56x45mm NATO 16" Barrel with Integral Brake

Faxon AR-15 Duty Series SOCOM Complete Upper Receiver Assembly 5.56x45mm NATO 10.5" Barrel Suppressor Ready

Faxon AR-15 Duty Series SOCOM Upper Receiver Assembly 5.56x45mm NATO 10.5" Barrel

Faxon AR-15 Duty Series SOCOM Upper Receiver Assembly 5.56x45mm NATO 10.5" Barrel Suppressor Ready

Faxon AR-15 Duty Series SOCOM Complete Upper Receiver Assembly 5.56x45mm NATO 16" Barrel