AR Parts in 5.56x45mm NATO

One Horse M16 .223/5.56 Bolt Carrier Group - Black Nitride

Fortis Switch AR-15 Rail System 556MM M-LOK Handguard - Black - 15"

Fortis Switch AR-15 Rail System 556MM M-LOK Handguard - Black - 9.2"

7.5" Slick Side Billet 5.56 Nitride Pistol M-LOK AR-15 Complete Upper Assembly

Evolve Weapons Systems Bolt Carrier Group - Phosphate

Atrius Development 3 Position Super Selector Ambidextrous Safety

Atrius Development 3 Position Super Selector Safety

VLTOR MUR Upper Receiver With Bolt Assist And Shell Deflector - Null Anodize - Grade B

VLTOR MUR Upper Receiver With Bolt Assist And Shell Deflector - Black Gunkote - Grade B

Mimtac F35 45/90 AR-15 Ambidextrous Safety Selector - Orange

Mimtac F35 45/90 AR-15 Ambidextrous Safety Selector - Black

MIMTAC Valkyrie AR-15 Drop-In Single Stage Flat Trigger - 3lb - Gold

Centurion Arms AR-15 5.56 Chrome BCG, Sand Rail Cut w/ Chrome V2 Bolt

Ballistic Advantage 16" 5.56 Government Profile Midlength AR-15 Barrel Modern Series w/ FSB Circular Handguard Cap

Aero Precision 16" 5.56 Government Profile Midlength AR-15 Barrel

Armaspec SFT45/90 Ambi Safety Selector - Gold

10.3" Carbine 5.56 Government M-LOK Upper Assembly

10.3" 5.56 NATO 4150 CrMoV Carbine Government 1:7 Nitride Barrel

Armaspec B2 Extended Mag Release - Blue

Armaspec B1 Extended Mag Release - Blue

Armaspec ECB Enhanced Combat Button - Blue

14.5" 5.56 Phosphate + Chrome Lined Carbine M-LOK M4 Upper Assembly

16" 5.56 Phosphate Midlength M-LOK Lightweight Upper Assembly

16" 5.56 NATO 1:9 Twist Phosphate Midlength Lightweight Barrel