The S&W M&P15TS Complete Upper is what you need to complete your AR-15 Rifle. This upper is chambered in .223 Remington/5.56 NATO, has a 16" barrel, and a Troy TRX rail. This upper comes with Magpul MBUS front and rear sights, and comes in a black finish.
Specifications and Features:
M&P 15TS Complete Upper
.223 Rem/5.56 NATO
14.5" Chrome-lined CMV barrel with permanent Smith Vortex flash hider for 16" overall length
Troy 13" TRX Extreme Handguard
New state of the art rotary locking system
Proprietary patent pending one-piece design
Reduced heat transfer
Significant weight reduction
True U.S. Military Specification M1913 rails
Increases target acquisition speed
Free floating design that enhances accuracy
Includes Troy barrel nut
MBUS Front and Rear Sights
Barrel twist rate 1 in 7"