The rear is dovetail--you can make your own tool to push it out of the slide, but you'll want to be gentle with new night sights installing them. You can also use the brass, or wooden dowel as a drift punch. The front sight is staked in at the top, and retained by a screw from the bottom. Kind of a hassle for the DIY'er. My suggestion----buy a set of night sights, then ask the dealer where you buy your pistol if they will install the new sights for you free. Never hurts to ask, but be prepared to pay maybe $20 for them to do that. I've been the Glock armorer's kit with the tools to do this as I have several Glocks, but only one still has factory sights. The kit goes for $125, and I could get a group buy with three or more for $5-10 off. I haven't got one yet as I'm still not quite able to justify it. If I get my FFL, it will be one of my first tools though.