5.56x45mm NATO Gun Parts

Green Mountain 5.56 AR-15 Barrel 16" M4 Crowned Phosphate

Green Mountain 5.56 AR-15 Barrel 14.7" M4 A1 Phosphate

Green Mountain 5.56 AR-15 Barrel 14.5" M4 Phosphate

Green Mountain 5.56 AR-15 Barrel 12.7" M4 A1 Phosphate

Green Mountain 5.56 AR-15 Barrel 11.5" M4 A1 Phosphate

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

Linemount T91 Lower Handguard w/Heatshield

Linemount Fast Check 5.56 NATO Headspace Gauge Set

Ballistic Advantage 16" 5.56 1:7 Carbine Length Chrome/Phosphate Barrel

Atrius Development 3 Position Super Selector G-LEVER Ambidextrous Safety

Obsidian Arms Enhanced AR-15 Bolt Carrier Pin Kit

NBS Mil-Spec Carbine Buffer Kit w/ H2 Heavy Buffer

NBS AR-15 1/2 x 28 Slotted Thread Protector

Centurion Arms AR-15 5.56 Chrome Bolt Carrier Group, Sand Rail Cut w/ Chrome E4 Bolt

Armaspec S3 Enhanced Trigger Guard - Gold

Armaspec ECB Enhanced Combat Button - Gold

Armaspec ECB Enhanced Combat Button - Blue

Armaspec TCB-31 Tactical Combat Button - Blue

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

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

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

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

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

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