Aero Precision M4 Barrel

Aero Precision is usually my first stop when I need an AR-15 upper or lower receiver. I have found their receivers to be an excellent value and it appears that their newest offering is going to be a great value as well. They are now serving up an M4 profile barrel that looks like a great value on paper.


The Aero Precision M4 Barrel is turned from 4150 Chrome Moly Vanadium steel and features a 1 in 7″ twist. It has an M4 profile, carbine length gas system, a 5.56 chamber, and M4 feedramps. This barrel accepts a standard .750″ gas block over it’s .0635″ gas port. I commend Aero Precision for not only listing their gas port spec but also for sizing it correctly!

The icing on the cake is the inside and out QPQ finish. QPQ is a nitriding treatment. Similar finishes are often known by their trade names like Melonite and Tennifer. QPQ is hard enough and corrosion resistant enough to stand in for chrome lining. Since it is a treatment, not a coating, it adds almost no thickness to the bore which can lead to improved accuracy.

Aero Precision would like to offer additional barrel profiles in the near future so stay tuned. Check out the new Aero Precision M4 Barrel.


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