AR Parts in 5.56x45mm NATO

Armaspec TCB-31 Tactical Combat Button - Blue

16 5.56 Black Nitride 1:9 Carbine M-LOK Government Upper Assembly

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

NBS 16 5.56 Phosphate Midlength M-LOK Lightweight Complete Upper

NBS 16 5.56 Phosphate Midlength M-LOK Lightweight Upper Assembly

NBS .750 Low Profile Gas Block - Phosphate

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

20" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Rifle Lightweight Barrel

16" 5.56 NATO 1:7 Twist Phosphate + Chrome-Lined Midlength Heavy Barrel

16" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Midlength Heavy Barrel

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

16" 5.56 NATO 1:7 Twist Phosphate Carbine Heavy Barrel

16" 5.56 NATO 1:7 Twist Phosphate Midlength Lightweight Barrel

16 5.56 Phosphate Carbine M-LOK Government Upper Assembly

20 5.56 Phosphate Rifle M-LOK Government Upper Assembly

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

16" 5.56 NATO 1:9 Twist Black Nitride Carbine Lightweight Barrel

16" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Carbine M4 Barrel

16" 5.56 NATO 1:8 Twist Phosphate Carbine Government Barrel

20" 5.56 NATO 1:9 Twist Phosphate Rifle Lightweight Barrel

20" 5.56 NATO 1:9 Twist Phosphate Rifle Government Barrel

16" 5.56 NATO 1:9 Twist Phosphate Carbine Heavy Barrel

20" 5.56 NATO 1:9 Twist Phosphate + Chrome-Lined Rifle Heavy Barrel

16" 5.56 NATO 1:9 Twist Phosphate Carbine M4 Barrel