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Phase 5 Tactical 7.5" 5.56 Barrel (Electroless Nickel M4 Extension)

  • Phase 5 Tactical 7.5" 5.56 Barrel (Electroless Nickel M4 Extension)
  • Phase 5 Tactical 7.5" AR-15 Barrel - Muzzle
  • Phase 5 Tactical 7.5" AR-15 Barrel (Electroless Nickel M4 Extension)
  • Phase 5 Tactical Electroless Nickel M4 Extension

Phase 5 Tactical 7.5" 5.56 Barrel (Electroless Nickel M4 Extension)

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$270.00 $195.95
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  • Extensions are precision-ground for maximum accuracy and later coated with Electroless Nickel for superior wear resistance and extended use
  • Barrel has a Military-Standardization Manganese Phosphate finish which helps prevent rust, adds aesthetic appeal and ensures aesthetic compatibility with a wide range of firearms

*A barrel that is shorter than 16" is only for use on a pistol configuration firearm or a NFA registered Short-Barreled Rifle (SBR). All NFA laws apply!


  • Caliber: 5.56 NATO
  • Length: 7.5"
  • Gas Placement: Pistol-Length
  • Gas Seat: 0.750"
  • Twist Rate: 1:7 Twist
  • Weight: 1 lb. 1.4 oz.
  • M4 Feed Ramps: Yes
  • Muzzle Thread Pattern: 1/2"-28
  • Finish: Phosphate


Whether you are building a Shot Barrel Rifle (SBR) or an AR pistol, this 7.5-inch barrel from Phase 5 Tactical is a great choice.

This barrel is finished with Manganese Phosphate, which guards against corrosion and gives the surface a uniform, satin black color. This item undergoes several stages of heat treating and thermal stress relief that gives the barrel unequaled durability and the ability to shrug off the stresses of extreme use. The Phase 5 Tactical barrel is also air gauged to ensure the perfect bore diameter.

The electroless Nickel coating on the AR15 barrel is what sets this particular item apart from the rest of the competition. The outer coating offers many advantages over other typed brands. The nickel coating produces an even layer that is impermeable to corrosion of all types. This barrel also confers a natural lubricity to the parts. The extension features M4-style feed ramps for consistent reliability. The 1:7 twist is optimal for 5.56x45 NATO and .223 Remington ammunition.

Give your AR15 the advantages of electroless nickel coating with this innovative component from Phase 5 Tactical!

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