AR Parts in 5.56x45mm NATO

16" 5.56 NATO 1:7 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

16" 5.56 Phosphate Carbine M-LOK Heavy Upper Assembly

16" 5.56 Phosphate Carbine M-LOK M4 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

20" 5.56 NATO 1:9 Twist Phosphate Rifle Heavy 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

14.5" 5.56 NATO M4A1 SOCOM Carbine Complete Upper w/ FSB

Daniel Defense 5.56 NATO 11.5" 1:7 Contract Overrun Upper Receiver w/DD4 7.0 Handguard

Nickel Boron M16 Bolt Carrier Group 5.56/.223/300 BLK

12.5 5.56 NATO Government Carbine M-LOK Upper Assembly

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