However, it is sometimes difficult to perform this trick against the second boss because the plane sometimes floats flies too high. This trick helps against the first and second bosses. While crouching doesn't remove the rapid fire cap for throwing grenades in Metal Slug 1, running into an object does. To cancel this delay, crouch during the switching animation.
Normally when you run out of ammo, your character takes about a second to switch back to the pistol before you can start firing again. The current Metal Slug 3 run does not use this trick. This trick is most useful against Metal Slug 3's fourth boss because he can only be hit by upward shots. If you have the flame shot and you need to fire upwards, jumping increases your firing rate.
This rule even applies to weapons that fire slowly such as the shotgun and flame shot. Normally when you fire weapons (or throw grenades), there is a cap limiting how fast you can fire, but crouching bypasses this cap and lets you fire as quickly as possible. Note: This trick doesn't apply to Metal Slug 1, nor does it apply to pistols in Metal Slug 2 and X. Metal Slug games don't have any major tricks, but there are a couple of small tricks you can perform to save time.
