Thats a new one, you do not move the slide manually at first with your hand. You press in the takedown button and rotate the takedown lever down and allow the slide to jump forward on its own, that is when you continue to slide the slide off the frame. It not like a Glock. Anyway, you must have the takedown lever down before the slide will be free to move off the frame. I have an older model, it may be different than the 92A1.