AR Parts in 5.56x45mm NATO

14.5" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Carbine M4 Barrel

Front Sight Detent Spring 5.56

20" 5.56 NATO 4150 CMV Black Nitride CHF Govt 1:8 Rifle Length Barrel

Aero Precision AR-15 5.56/.223 Bolt Carrier Group w/ Carrier Grooves - Black Nitride

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

14.5" 5.56 Chrome-Lined M4 1:9 Carbine Length Barrel w/ FSB - Phosphate

BCA Lightweight 5.56 NATO Complete AR-15 Bolt Carrier Group - Black Nitride

Aero Precision M4E1 Enhanced Upper Receiver and Quantum M-LOK Handguard Combo - Anodized - 15"

Aero Precision M4E1 Enhanced Upper Receiver and Quantum M-LOK Handguard Combo - Anodized - 12"

Aero Precision M4E1 Enhanced Upper Receiver and Quantum M-LOK Handguard Combo - Anodized - 7"

Aero Precision M4E1 Enhanced Upper Receiver and M-LOK Handguard Combo Gen 2 - Anodized Black - 7"

Superlite Free Float M-LOK QD AR-15 Handguard - Black, 10"

NBS AR-15 Stripped Upper

NBS AR-15 .223/5.56 Bolt Carrier Group - FDE PVD

16" 5.56 NATO 1:8 Carbine Length M4 Barrel - Black Nitride

16" 5.56 NATO 1:7 Mid-Length Lightweight Barrel - Black Nitride

13.5" AR-15 Superlight Duty M-LOK Free Float Handguard

13.9" 5.56 NATO 1:7 Black Nitride Midlength Pencil Barrel

NBS 16" 5.56 M4 Carbine 1:8 M-LOK Upper Assembly - Black

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

BCA M16 Profile 5.56 NATO Complete Bolt Carrier Group - Black Nitride

16" 5.56 16" Parkerized Carbine Heavy Barrel 1:9 Twist

LMT Full-Auto 5.56 Enhanced AR-15 Bolt Carrier Group

LMT Full-Auto Enhanced 5.56 Bolt Carrier