We get asked about the difference between an Apex Grade Barrel and the Factory Barrel in the 9mm M&P. These two target graphics show you the difference – at 50 yards. Both were shot from a Ransom Rest to eliminate the human factor and test the mechanical accuracy of the OEM barrel versus ours. It's a big difference, and why we call the barrels ‪#‎ApexGrade‬. Accuracy-520-Factory Accuracy-186