5.56mm/.223 AR Barrel

• Available in 7.5", 10.5", 12.5" and 16" options
• High quality US made 4140 chromoly Steel
• Black nitride / Melonite Finish
• 1:7 Twist Rate
• 1/2x 28 thread pitch
• 7.5" w/Pistol Length Gas System
• 10.5" and 12.5" w/Carbine Length Gas System
• 16" w/Mid Length Gas System
• M4 feed ramps
• SOCOMProfile
• .750 Gas Block Shoulder
• Button Rifled

The New Frontier Armory 5.56mm/.223 AR barrels are proudly MADE IN THE USA by hard working American men and women.