MPN: 0011100077


  • Caliber: 5.56 NATO / .223 Rem.
  • Chamber: .223 Wylde
  • Finish: Type III Class 2 Hardcoat Anodized Finish
  • Upper Receiver: Seekins Precision NX15 Upper - CNC Machined From Solid 7075-T6 Billet Aluminum
  • Handguard: 15" Seekin Precision NOXs M-LOK Handguard - CNC Machined From 6061-T6 Aluminum
  • M4 Feed Ramps: Yes
  • Muzzle Device: Seekins Precision Melonited Nest Flash Hider
  • Barrel: 16” 1:8 Match Grade 416 Stainless Steel .223 Wylde Barrel
  • Muzzle Thread Pattern: 1/2"-28
  • Gas Block: Seekins Precision Melonited Adjustable Gas Block
  • Gas Tube: Mid-Length Melonited Gas Tube
  • Bolt Carrier Group: Seekins Precision Melonite Coated NX15 Bolt Carrier Group
  • Charging Handle: Seekins Precision DNA Charging Handle


  • Weight: 4.61 lbs.
  • Length: 24.75"


  • AR-15 lower receivers


Are you planning a new AR build? Then consider this NX16 Seekins Precision complete upper. As with many other products by Seekins, this complete .223 wylde upper is made to exceed Mil-Spec standards for performance that you can rely on over and over again.

The precise machining of the receiver of this upper ensures an accurate fit and stellar performance. The 16-inch .223 Wylde stainless steel match-grade barrel will provide you with an accuracy rivaling that of a precision rifle with the durability of a combat weapon. The barrel is equipped with a Seekins Precision Nest Flash Hider and is bead-blasted then Armor Black coated to eliminate glare.

The Ability To Fine Tune Your Rifle

The adjustable gas block for this NX16 .223 wylde upper 16" permits the shooter to accurately tune the gas system for optimal performance with various loads. Both the gas block and the gas tube are coated with Melonite for easy cleaning and increased reliability.

The handguard provides a flat bottom surface for stability when shooting from a barricade or another object. M-LOK slots provide ample room for extra picatinny rail sections if needed. The handguard also includes integral QD sling mounting points.

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