16" Midlength Upper With GPX 14" Rail

16″ Midlength Upper w/ GPX-14″ Rail

Original price was: $748.96.Current price is: $636.62.

16″ Midlength Upper with 14″ GPX Rail System, M4 Nickel Boron Extension

In stock


(Nitride Premium)


  • Barrel 16″
  • Barrel Steel 4150 CMV
  • Chambered in 5.56 NATO
  • Nitride Treatment inside and out (Barrel)
  • {Nickel Boron} M4 Extended Feed Ramps
  • Nickel Boron M4 Barrel Extension
  • 6 Groove rifling for increased accuracy
  • 1:7 Twist Rate
  • MIDLENGTH Gas System with Nitride Gas Tube
  • 1/2×28 Thread Pitch
  • Tuned Gas Port
  • Target Crown
  • Nitride treated Micro Gas Block with .750 seat
  • Forged Upper
  • Hand guard type: 14″SOT GPX Free Floating Rail System (Milled Sides)
  • Shot peened and MPI tested bolt
  • M16 carrier with properly staked carrier key
  • Forged Charging Handle
  • A2 Flash Suppressor
  • Custom Barrel Profile

SOT GPX-14 Rail System:

The SOT (GPX-14)” Rail System Has an overall length of 14.00″. It’s Enhanced features include a  machined one piece billet aluminum extruded rail which is much stronger and more rigid than 2 piece rail systems. The GPX-14 Provides (6) Sling Swivel Attachment Points; (2)  Front, and (4) Rear that are integrated into both the left and right side.

Designed to be used in with a (Low Profile Gas Block on a Carbine, Midlength or Rifle length gas system). This rail system gives the user a more ” rigid” way to mount various accessories available to their AR15 platform. See more../p>


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