Ar15 Bbl, 20", Bb, M16, 5.56, Rifle

FN AR-15 20" Barrel, M16A2 Profile Rifle Gas Length, 5.56x45mm NATO

Specifications:

- Caliber: 5.56x45mm NATO
- Length: 20"
- Profile: M16A2
- Gas Length: Rifle
- Twist Rate: 1:7
- Chrome Lined
- Button Rifled
- Alloy Steel