stolen from: https://forums.gunboards.com/showthr...-Slide-removal
"it can be a little tricky the first time but once u get it, its really quite easy. Remove the magazine and put the striker in the fired position. then while holding the latch up, push the slide back about .5 to .75 of an inch until it engages the striker guide on the inside. Then while keeping the latch engaged to the striker guide inside, let the slide come forward about .25 of an inch. This disengages the striker guide from its latch on the frame. Then lift the rear of the slide up and u can remove it in a forward direction. be careful not to loose the striker guide as it may pop off its spring"