Del-Ton AR-15 A3 Flat-Top Upper Assembly 5.56x45mm NATO 1:9 Twist 16" Mid-Length Gas System Barrel Chrome Moly Matte 

This Del-Ton complete upper receiver assembly features a flattop upper receiver with a 16" Mid-Length profile chrome moly barrel. The complete assembled upper receiver features a flattop upper receiver with a 16" heavy profile chrome moly barrel. The 5.56x45mm NATO chamber, 1 in 9" twist, and M4 feed ramps ensure reliability with a wide variety of commercial and surplus ammunition. The  upper features a mid-length gas system and sight radius.

Upper Reciever:

• 16" Chrome Moly Barrel, 1 in 9" Twist,
• 5.56x45mm NATO chamber
• ½"-28 Threaded Muzzle with A2 Flash Hider
• A2 Front Sight Base attached with Taper Pins
• Carrer Key attached with Grade 8 Screws and Staked
• Mil-Spec Bolt Carrier, Phosphate Coated with Chrome-lined interior
• MPI Tested Bolt
• Charging Handle with Standard Latch
• Made in the USA