14.5″ Upper w/ GPR-14″ Rail System & Micro Brake


14.5″ Midlength Upper, w/ GPR-14″ Rail System, M4 Nickel Boron Extension with SOT Micro Brake Nitride M16 Bolt Carrier Group and More!

In stock


NITRIDE PREMIUM 14.5″ Rifle Upper w/ M4 Nickel Boron Barrel Extension:

  • Barrel 4150 CrMoVa  (NATO Chamber)
  • 14.5″ Nitride Treated Barrel (inside & out)
  • Midlength Gas System
  • 1:7 Twist Rate
  • 1/2 x28 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)
  • GPR-14″ Free Floating Rail System
  • Ejection Door
  • Milspec Forward Assist
  • Forged Charging Handle
  • SOT Micro Brake (Nitride Treated)

(SOT) GPR-14″ Rail System:

Our enhanced features include a  machined one piece aluminum extruded rail which is much stronger and more rigid than 2 piece rail systems. The GPR-14 Provides (8) Sling Swivel Attachment Points; (2)  Front, (2) in the Middle,  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..


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