9.2″ Upper with GPX-9 Rail System


9.2 Siphon AGP″ Carbine Upper, w/ GPX-9″ Rail System, M4 Nickel Boron Extension with A2 Flash Hider, Complete Nitride Gas System and more!

In stock



NITRIDE PREMIUM 9.2″ Pistol Upper w/ M4 Nickel Boron Barrel Extension

  • 9.2″ Siphon AGP Barrel 4150 CrMoVa  (5.56 NATO Chamber)
  • Nitride Treated Barrel (inside & out)
  • 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 Carbine Gas Tube (Nitride Treated)
  • Nitride Micro Gas Block .750 (Nitride Treated)
  • GPX-9″ Free Floating Rail System
  • Forged Charging Handle
  • A2 Flash Hider 1/2×28

SOT GPX-9″ Rail System:

The SOT (GPX-9)” Rail System has an overall length of 9.2″; 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-9 Provides (4) QD  Sling Swivel Attachments Points integrated in rear that are machined into both the left and right sides.

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


There are no reviews yet.

Be the first to review “9.2″ Upper with GPX-9 Rail System”