Looks better than it shoots - Zaffiri Precision Glock 17L Flush and Crown Pistol Barrel

The barrel fit tight into the Zaffiri G17L slide I purchased, the barrel grooves were cut in good shape. Accuracy is less than ideal, shots were all over target. I have a KKM G17L barrel, and it doesn't shoot much better. I have great accuracy out of G19, G17, and G34 pistols with similar setups and triggers. This is my second G17L build, and I was concerned that I just had a bad slide on the first build, since it was a KKM barrel. I'll avoid G17L builds completely in the future. I don't know if it is the longer barrel harmonics, but I have not had any luck with any of the longer barrels. I have Zaffiri Precision in a G34, and it shoots great.