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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

MPN: RDAR223U1618-SFSS-TPI

PRODUCT DESCRIPTION

Complete AR-15 Drop In Ready Upper Assembly Features a Spiral Fluted Stainless 16", .223 / 5.56, 1 in 8 twist heavy barrel W / 10" Free Float Keymod Fore End by Riley Defense. Comes complete with Full Auto Bolt Carrier Group and Enhanced Charging Handle Installed as well as an upgraded TPI Competition Grade Stainless Steel Muzzle Break. The Stainless Steel 16" Spiral Fluted heavy barrel has a 1 in 8 twist and is chambered in .223 Wylde which will readily accept and properly chamber both .223 Remington and 5.56 NATO. Ready to Drop In and Push Pin.

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.  

SPECS
Additional
  • 16" Spiral Fluted Stainless Steel Barrel
  • 1 in 8" twist
  • HPT/MPI
  • .223 Wylde Chamber
  • M4 Feed ramps
  • Low Profile Micro Gas Block
  • DGI Stainless Carbine-length gas tube
  • Direct Gas Impingement
  • Mil-Spec M16 Bolt Carrier Group
  • 10" Free Floated Aluminum Keymod Handguard
  • Top Picatinny Rail
  • Forged Upper Receiver with Forward Assist, Shell Deflector 
  • One year warranty
  • SKU ACC-RD-UPPER-SFSS1618-TPI
    Country of Manufacture United States
    License Requirement None
    Manufacturer Riley Defense
    Mfg. Part Number RDAR223U1618-SFSS-TPI
    UPC No
    Caliber/Gauge 5.56x45
    Action No
    Barrel Length 16
    Barrel Twist N/A
    Barrel Bore Type N/A
    Barrel Finish N/A
    Barrel Fluting N/A
    Barrel Profile N/A
    Mount Type N/A
    Beam Color N/A
    Firearm Fit AR-15
    Threaded Barrel No
    Condition New
    Free Shipping No

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