Features:

High Pressure Tested (HPT) and Magnetic Particle Inspection (MPI)
Made from Mil-Spec standards Chrome Moly Vanadium Steel (CMV)
Button rifling for accuracy
QPQ corrosion resistant finish
Pinned with VG6 Epsilon 556SL give you 16"+ overall length

Specifications:

Caliber: 5.56 NATO
Gas Seat: 0.750"
Gas Placement: Mid-Length
Twist Rate: 1:7 Twist
Material: 4150 Chrome Moly Vanadium Steel
M4 Feed Ramps: Yes
Muzzle Thread Pattern: 1/2"-28
Finish: QPQ Corrosion Resistant
Weight: 1.65 lbs.

Compatibility:

AR-15

Details:

For a legal rifle, the barrel has to be 16 inches long. Add a muzzle device to it, and the overall length of your rifle becomes even longer. Well, if you want to keep your rifle as short as possible without making it an SBR, then the 14.5-inch barrel with a pinned and welded Gamma 556 SL muzzle break from Aero Precision is an excellent option.

The barrel is made from Chrome Moly Vanadium Steel, which is more durable, and heat resistant than normal stainless steel. The barrel is also High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to ensure there aren't any cracks or micro deformities in the metal.

The barrel has button rifling for higher accuracy with a 1:7 Twist. It has a mid-length gas port placement, which is ideal for a 14.5-inch barrel. The VG6 Epsilon 556 SL muzzle break has three angled ports on both sides, and it can dramatically reduce perceived recoil and muzzle rise. It is permanently pinned and welded on the barrel with perfect timing.

Overall, this barrel is an excellent way to add a large muzzle brake to your barrel without increasing the overall length of your rifle.