AR Parts in 5.56x45mm NATO

Bravo Company Manufacturing MK2 BFH Enhanced Lightweight Barreled AR-15 Upper Receiver - 5.56 - 16" - MCMR-15

Bravo Company Manufacturing MK2 Barreled AR-15 Upper Receiver - 5.56 - 14.5" - FDE - MCMR-13

Bravo Company Manufacturing MK2 Barreled AR-15 Upper Receiver - 5.56 - 14.5" - Black/FDE - MCMR-13

Bravo Company Manufacturing MK2 Barreled AR-15 Upper Receiver - 5.56 - 14.5" - MCMR-13

Bravo Company Manufacturing MK2 BFH Enhanced Lightweight Barreled AR-15 Upper Receiver - 5.56 - 14.5" - MCMR-13

Bravo Company Manufacturing MK2 Barreled AR-15 Upper Receiver - 5.56 - 11.5" - MCMR-10

Bravo Company Manufacturing MK2 BFH Barreled AR-15 Upper Receiver - 5.56 - 11.5" - MCMR-10

Bravo Company Manufacturing Chrome Lined 5.56 AR-15 Barrel - Mid-Length - Government - 16"

Bravo Company Manufacturing Chrome Lined 5.56 AR-15 Barrel - Mid-Length - Government - 14.5"

Bravo Company Manufacturing Chrome Lined 5.56 AR-15 Barrel - Carbine - Government - 11.5"

Bravo Company Manufacturing 5.56 AR-15 Barrel - Rifle Length - SPR - 18"

Bravo Company Manufacturing Chrome Lined 5.56 AR-15 Barrel - Carbine - Tapered - 11.5"

Bear Creek Arsenal 5.56 AR-15 Bolt Carrier Group - Phosphate / Nitride

Ballistic Advantage 5.56 Complete AR-15 Bolt Carrier Group - Phosphate

Ballistic Advantage 5.56 AR-15 Barrel - Carbine - Pencil - 16"

Aero Precision M4E1 Threaded Barreled AR-15 Upper 5.56 Carbine Length ATLAS R-One - 16"

Q Sugar Weasel Complete AR-15 Upper Receiver - 5.56 - 13"

CMMG M4 Contoured AR-15 Barrel - 16.1" - 1:7

Rubber City Armory 5.56 Bolt Rebuild Kit

Expo Arms 5.56 AR-15 Bolt Carrier Group - Phosphate / Nitride

Bear Creek Arsenal 5.56 AR-15 Barrel - Mid-Length - M4 - 16"

Bear Creek Arsenal 5.56 AR-15 Barrel - Carbine - M4 - 1:8 Twist - 10.5"

Rubber City Armory Lightweight Adjustable 5.56 AR-15 Bolt Carrier Group - Nitride

Rubber City Armory 5.56 AR-15 Bolt Carrier Group - Nitride