Tranders17

I am currently on my third viper on a glock 17 I have a direct mount to slide as well. Vortex said I needed a larger relief cut in the front cut and different screws. I've milled the slide to get space at the front and also purchased the screws vortex recommended. I've shot 30 rounds through with this newest one and the glass is already beginning to move. I may try the gasket!