The Ballistics Advantage 14.5" 5.56 Government Profile Midlength AR 15 Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension. *All NFA/ATF Rules Apply. You may use this barrel with a lower receiver that is a registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when installed on a Pistol configuration firearm.
Specifications:

Caliber or Gauge	223 Remington/5.56 NATO
Length	14.5"
Model	AR Barrels
Twist	1:7"
Sights	None
Bore Type	Rifled
Finish	QPQ Corrosion Resistant
Type	All Purpose
Chokes Included
Choke Configuration
Barrel Type	Government Profile
Ammo Type	Tactical
Barrel Features	1/2"-28 tpi