10.5″ Upper Front Sight Base w/ 7.2″ Rail System


NITRIDE PREMIUM 10.5″ Carbine Upper, Front Sight Base with 7.2″ (GPR) Rail System, and M4 Nickel Boron Barrel Extension with “Black Magic” Muzzle Brake.

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(SOT) 10.5″ M4 Carbine Upper. All components of our uppers are machined and made for the avid shooter. This uppers offers a superior level of excellence that will last for many lifetimes. Our precision machined upper will perform dependably in the most unforgiving rigorous environments weather Law Enforcement, Military or just the recreational shooter and is backed by our SOT Lifetime warranty.

NITRIDE PREMIUM 10.5″ Carbine Upper with M4 Nickel Boron Barrel Extension:

  • Mil-Spec Rated Barrel 4150 CMV
  • 10.5″ Nitride/Melonite Treated Barrel
  • M4 Nickel Boron Barrel Extension with Extended Feed Ramps
  • Bolt Carrier Group w/Logo (properly staked w/Grade 8 hardware)
  • Nitride Treated Gas Tube
  • 1:7 Twist
  • F Marked Front Sight Base .750
  • 7.2″ SOT (GPR) Free Float Rail System
  • Anodized Forged Charging Handle
  • Muzzle Brake SOT “Black Magic”

*(Removal of Bayonet Lug) For Legality in Some States (Customers) Please check your Federal and local laws.


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