AR Parts in 5.56x45mm NATO

Rubber City Armory Blacknitride+ M16 Bolt Carrier Group w/ Adjustable Gas Key

NBS AR-15 9310 Bolt Assembly - Black Nitride

NBS AR-15 9310 Bolt Assembly - Nickel Boron

NBS Lightweight .223/5.56 Bolt Carrier Group - Nickel Boron

NBS Lightweight .223/5.56 Bolt Carrier Group - Black Nitride

AO Precision C158 SP/HPT/MPI 5.56 Bolt Carrier Group Black Nitride

NBS 1/2-28 Extended Flash Hider - .223/5.56

M16A2 Assembled Upper Receiver

20" 5.56 Chrome-Lined Lightweight Contour 1:9 Rifle Length Barrel w/ FSB Pho

Cloud Defensive 9.55" Optimized Rail - OWL (CORv1), OD Green

Velocity Recoil-Less 5.56/.223 Bolt Carrier Group - Nano Diamond Nickel

AO Precision True Mil-Spec SP/HPT/MPI 5.56 Bolt Carrier Group

20" 5.56 Lightweight Contour 1:9 Rifle Length Barrel w/ FSB Phosphate

Toolcraft Lightweight .223/5.56 BCG (Bolt Carrier Group) Black Nitride

NBS AR-15 Assembled Upper Receiver

NBS .223/5.56 Bolt Carrier Group - Black Nitride

Premium Series 10.5" 5.56 NATO 1:7 Black Nitride Carbine Length Barrel

NBS 16" 5.56 Gov / SOCOM Midlength M-LOK Upper Assembly - Black

Presma Picatinny Quad Rail - 12"

Presma Picatinny Quad Rail - 10"

Presma Picatinny Quad Rail - 4"

AR MAGLOCK AR-15 KingPin - Silver

AR MAGLOCK AR-15 KingPin - Black

AR MAGLOCK AR-15 Gen 4 Fixed Magazine Lock and Release Solution without Takedown Pin