It's got a hammer forged barrel with double thick chrome lining. It doesn't have the goofy and needlessly heavy "govt profile" barrel. It's got middy gas, which is better on a 16" barrel. The barrel and bolt are made of the same materials and subjected to the same testing. Gas key is staked. The only thing that might be better on the Colt is the material the buffer tube is made of... maybe. Not exactly a common failure point on the AR. The PSA doesn't need a H2 buffer because it has the right gas system for its barrel length.