2 Allen bolts on front sight, 2 straight screws on rear sight. Didn't actually undo them but sure they are not dummy's. Think there is a Terry D test from last years Feb magazine floating around somewhere in cyber space. He used the opens then popped on a scope and went back to opens.

This gun looks so much better in the flesh. I thought the price was wrong when I ordered mine, I was waiting to be told it was out of stock. I have come so close to buying a 99 or a 95 but hesitated every time after reading about issues with quality control. Glad I did now.