MDX Arms 16" 5.56NATO Seekins NOXS M-Lok HG Mid-Length Complete Upper

  • $679.99


Upper Receiver

  • T6 7075 Forged HA Type III
  • M4 Feed Ramp
  • Standard Mil-Spec Dust Cover & Forward Assist

Charging Handle

  • Standard Mil-Spec Charging Handle

Bolt Carrier Group

  • Black Nitride / QPQ Finish
  • M16 Full Auto with Staked Gas Keys
  • 9310 Steel MPI tested bolt & 8620 Steel Carrier.
  • Compatible with 5.56 NATO, .223 Remington & 300 AAC Blackout.
  • Corrosion resistance inside and out. Superior to chrome lined and parkerized bolt carrier groups.
  • Slicker hardened 70RC surface
  • Includes extractor o-ring for increased extracting reliability.

Barrel/Gas Block

  • 16" 5.56 NATO
  • 1:7 Twist
  • 4150 Contour Chrome Moly Vanadium (CMV) - Parkerized
  • .750 Low Profile Steel Gas Block - Screw On
  • Mid Length Gas System

Handguard/Rail

  • Seekins 15" NOXS MLok Handguard 
Flash Hider/Muzzle Brake
  • Mini Multi Port Comp - Nitride - 1/2 x 28

Notes:

  • Test Fired for function
  • Build in Riverside, California

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