The flat top M4 Mil-Spec upper receiver are forged CNC Machined from 7075-T6 Aluminum, the hardest and most durable material of any upper! To ensure even more strength they are Mil-Spec Type 3 hard coat anodized.
The barrel is made from the most durable material in the barrel world, 4150 Chrome Moly Steel! These barrels are NOT chromed lined because that reduces accuracy, it features Nitride Coating to increase durability and reduces wear & tear! It features a gas impingement system operating at the pistol length & a 1:8 twist. Nothing is overlooked on this barrel, it is even head spaced twice from the manufacturer for reliability!
The 15” Unmarked Keymod by Hera is engineered and manufactured in Germany. This modern designed rail is made from Airplane grade Aluminum! The rails are then hard coat anodized to improve the strength! To top it off, Hera’s “Anti-Turning Milling” eliminates turning.
As everyone knows, CBC Industries assembles there uppers exclusively with Veterans of our Armed Services! These military men have a found place in their heart for the 5.56, so they mic port holes, torque to military specs.The end result, the highest quality upper assemblies for the money in the market!
Product Details: AR-15 Upper Assembly – 16″ / 300AAC / 1:8 / 15″ Hera Arms Keymod Unmarked AR-15 Handguard / Rail
➲ Upper Receiver
The foundation of all good AR\'s is built upon a dependable upper receiver. CBC upper receivers offer best-in-class quality while providing you years of dependable service. Boasting a MIL-SPEC type III hard coat anodized finish and machined from 7075-T6 forged aluminum, this M4 flat-top receiver delivers a lifetime of superior function. You want your AR built upon a solid platform - this receiver gives you the confidence that your AR-15 will function when it counts most.
➲ .750 Low Profile Gas Block
Constructed from 4150 hardened steel and features a secure dual-set screw mounting design
CBC provides a wide selections of AR-15 upper assemblies in a variety of styles and lengths - all partial AR-15 uppers are assembled with everything less the charging handle and bolt carrier group. Our partial upper assemblies offer quality and performance that will satisfy the most demanding shooter. Better yet, all CBC AR-15 uppers are custom built-to-order enabling us to provide you with the best prices you will find anywhere. The quality of our AR-15 uppers are backed by our Lifetime Warranty - if any CBC upper assembly becomes defective, we will repair or replace it at no charge. Get your AR-15 upper assembly at CBC today and save with free shipping!