1.)make a new slide and color it black, put some cool text in the right and leave some space in the right.

2.) make another layer that’s also black and the same height and a bit smaller width
(here it is, only colored blue.)

3.)make a bullet at the edge of the black in a new layer facing right. And then merge the layer down. (layer>merge down.)(note- make sure the bullet is smaller than the barrel of your planned gun.

Here’s a bullet you can use.)
4.)make new layer with the gun your going to use. Make sure it’s barrel covers the bullet.(here’s the gun I used.)
5.)make another layer and use a brush to make some yellow/white around the barrel. Then go to filters>blur>motion blur with about these settings. (it varies a lot, check what yours looks like first.) here’s what I made (except I turned the blue to black.)

6.)make the blur invisible.

7.)hit ctrl shift m to go to animation. Go to your animation bar (if you don’t see it got to windows>animation.) and duplicate the frame. Go to the second frame and move the bullet all the way across the screen.

8.)select the first frame and click the tween button, use these settings. (note-more frames=slower but smoother, less frames=faster but choppier.)

9.)go back to the second frame and make the little yellow blur visible, also give the last and first slide a bit of a delay. (I used these settings.)

10.)here’s what I got.

11.)enjoy!