The one rmr glock 17 slide I have came from lantac with standard hight night sights. They know what's up. Former navy seals. As much as I hate to compliment navy seals lolI swapped the standard sights onto the 509T in place of the overly tall suppressor sights. That took care of my problem. All is well now. I don't know why I didn't think of doing this before. I want to thank FN for putting anti-seize on the original sights, made removal a breeze.