That's not the line, tho, and this frame certainly isn't from the final cut of the movie, it's at a different angle. What happens is Ken is walking up behind Ray and right as he gets close Ray pulls out the revolver to shoot himself, then Ken goes "Hey, don't!" and Ray jumps up
Your right on the line but that shots in it. He's sitting on the park bench and he doesn't have the gun to his own head until the last second. I forget the characters names but the old man is walking up very quick and then it switches to show colin ferrels face and his arm comes from out of frame.
For a split second they are both pointing guns at his head.