This is a AR-15 5.56 NATO upper with Diamond fluted Mellonited barrel. Mil-spec upper receiver with M4 Feedramps with 11 inch Troy Alpha Rail Free Float Forearm. Chrome-lined barrel in 1-7" or 1-9" Twist. We check headspace after Final assembly.  Our customers are reporting that upper assemblies using these barrels are consistently shooting 1 moa or less! DOES include bolt and carrier, and Vltor/BCM Mod 4 charging handle. 

Machined, 7075, T6 aluminum, upper receiver with  flattop rail, accepts Picatinny-style rings and your tactical accessories. Finished with mil-spec, hard-coat, black anodizing for protection from scratches, mars, and abrasion. Includes case deflector, port cover, and forward assist.

Precision Firearms M4 Flattop Upper
1 in 7" or 1-9" twist 16.5” Mellonited Steel Barrel

Precision Firearms Phalanx Bolt and Carrier Group

Vltor/BCM Charging Handle Mod 4

Phantom Flash Hider
Troy Alpha Rail Free-float forearm 11 Inch with M4 Style Spring Deploy Sight

Steel Gas Block

Stainless Steel Gas Tube

Weight with carrier - 4lbs 7oz.

Limited Lifetime Warranty

Feel free to ask all the question you have. We take the time to answer them all!