5.56 Nato Upper 15" Free Float Quad rail Melonited Barrel

This complete upper features 
• 16" length M-4 Barrel 
• 4150 Chromemoly vanadium barrel with Black Nitride (Melonite) Finish
• Carbine Length Gas System
• .5.56 Nato Chamber 
• 1 in 9" twist rate 
• M4 Feed ramps 
• Low Profile Front Gas Block .750 diameter under gas block
• A2 Flash Hider 1/2 - 28 Thread
• 15" Free Float Quad Rail
• Forged upper receiver 
• This includes the Bolt Carrier and Charging Handle
• This Upper come test fired from the factory 
• Made in the USA