MDX Arms DTF 16" .223Wylde 1:8 416RSS Intermediate Gas System Mlok, Adj GB, Devastatr Brake Competition Upper

  • $1,100.00
  • Save $100

Upper Receiver

  • Fortis Manufacturing Lighweight Billet Upper
  • T6 7075 Billet HA Type III
  • M4 Feed Ramp
  • Standard Mil-Spec Dust Cover & Forward Assist

Charging Handle

  • Strike Industries T6 7075 Extended Charging Handle

Bolt Carrier Group

  • DTF NIMITZ Full Auto QPQ Nitride Bolt Carrier Group
  • Black Nitride / QPQ Finish
  • M16 Full Auto with Staked Gas Keys
  • 9310 Heat Treated 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.

Gas Block

  • Superlative .750 Adjustable Bleed Off Gas Block - Solid
  • 30 way lock adjustment 
  • front adjustment with allen tool
  • 416R SS 


  • DTF Industries 16" Merlin .223 Wylde Match Grade Barrel
  • 1:8 Twist 
  • 416R Stainless Steel Fluted
  • Medium Contour 
  • .750 Low Profile Steel Gas Block - Screw On
  • Intermediate Length Gas System

*DTF Merlin 16's Intermediate Length gas system is approximately 2" longer than the Mid Length gas system and approximately 1.5" shorter than Rifle Length gas systems

*Hand Lapping is a process that deposits lead evenly inside the barrel which smooths the bore and eliminates the need for a lengthy break-in process. A smooth bore is by all definitions a more accurate bore.

*Melonite is a surface conversion treatment that makes the steel extremely hard therefore resulting in a barrel with longer life and durability. Barrel and barrel extension are processed at the same time in order to create consistency throughout the bore. We use a proprietary method to secure our barrel extensions throughout the process.  Altering the barrel in any way or penetrating the Melonite voids the warranty.


      • DTF Industries 15" Slim Reaper Super lightweight Mlok Handguard 

      Flash Hider/Muzzle Brake

      • DTF Industries Devastatr Brake - 1/2 x 28


      • Test Fired for function
      • Build in Riverside, California


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