AR-15 Drop In Ready Complete Upper w/ Spiral Fluted Stainless Steel 16" Heavy .223 / 5.56 Barrel, 10" Free Float Keymod and SS-TPI Break - by Riley Defense

This is a new entry for us in our AR-15 Upper line and we are very proud of it. In fact, when these uppers showed up at our door all of the warehouse guys gathered round and started gawking at them, and talking about how stylish they were and how cool they look. That always means something here because we are a pretty jaded bunch. AR-15, Drop In Ready Enhanced Upper Assembly 16" Spiral Fluted Stainless Heavy Barrel, W / 10" Free Floated Keymod Handguard by Riley Defense. This upper comes complete with Full Mil Spec M16 Bolt Carrier Group, Premium Pro Grade Charging Handle, Forward Assist and Dust Cover completely installed and ready to drop into your favorite AR-15 Lower. It features a 10" Free Floated Aircraft Grade Aluminum Keymod Handguard / Fore Arm as well as an upgraded StainlessTPI Competition Muzzle Break.

The 16" barrel is a heavy barrel in Stainless Steel which has been Spiral Fluted for the ultimate in both style and accuracy. Barrel has a 1 in 8 twist and is chambered in .223 Wylde which will readily accept and properly chamber and fire both .223 Remington and 5.56 Nato cartridges. The 1 in 9 twist rate on the barrel is widely considered the best choice for stabilizing a variety of different bullet weights in flight and a Free Floating Keymod Fore Arm / Handguard which should increase accuracy even more.
The 10"Keymod not only enhances the upper and free floats the barrel for improved accuracy it also prvides a full picatinny top rail and 7 angled surfaces for attaching any number of keymod rails for a variety of attachment options. The 10" length is long enough to provide a full hand hold position and coverage for the gas system, but short enough to allow the spiral fluting on the barrel to be on proud display. The keymod format also allows for the flutes to still be seen through the forearm on the rear portion of the barrel.

In my opinion the advantage to the keymod over a quad rail is that it provides a relatively smooth gripping surface while also giving the rifle a really cool look. It is also the latest and most adaptable of all AR-15 handguard designs, it is lightweight, and as opposed to the quad rail only adds extra weight at the attachment points when in use. See Keymod Rails Here.

Just as an aside, The Black on Stainless color scheme on this not only looks great... all of us here agree it looks awesome. 

Drop In, Push Pin's, Hit the Range. Each upper is test fired for function and warrantied against mechanical defect for a period of 1 year by Riley Defense.

Riley Defense uppers are designed to provide custom upgrades and feature several enhanced characteristic's and improvements over standard production grade uppers on the market place while maintaining a similar price point. It's like buying a Cadillac at Chevrolet pricing.