14.5″ – 16.01 OVL Midlength Upper w/ 12.6″ GPX Rail, Black Magic Brake

5.00 out of 5
(1 customer review)


14.5″ Pinned to 16.01 Overall Midlength Upper, w/ 12.6″ GPX Rail System, M4 Nickel Boron Extension with Black Magic Muzzle Brake.

In stock


NITRIDE PREMIUM 14.5″ pinned and welded to 16.01″OVL Midlength w/ M4 Nickel Boron Barrel Extension:

  • Barrel 4150 CMV
  • 14.5″ Nitride Treated Barrel (inside & out)
  • Target Crown
  • 6 Groove Rifling
  • 1:7 Twist Rate
  • 1/2×28 Thread Pitch
  • Nickel Boron M4 Barrel Extension with Extended Feed Ramps
  • Nitride M16 Bolt Carrier Group w/Logo (properly staked w/Grade 8 hardware)
  • Nitride Gas Tube (Nitride Treated)
  • Nitride Micro Gas Block .750 (Nitride Treated)
  • 12.6″ GPX Free Floating Rail System (Milled Sides)
  • Forged Charging Handle
  • Black Magic Muzzle Brake (Pinned and Welded)
  • Custom Barrel Profile


The SOT (GPX-12)” Rail System has an overall length of 12.6″; 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-12 Provides (6) Sling Swivel Attachment Points; (2) Front, and (4) Rear that are integrated into both the left and right sides.

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

1 review for 14.5″ – 16.01 OVL Midlength Upper w/ 12.6″ GPX Rail, Black Magic Brake

  1. 5 out of 5

    Walt Anderson (verified owner)

    I enjoyed shooting this upper. It came exactly as I ordered and ran flawlessly at the range. See video review here:


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