Bind your gun drop key (f by default) to your item pick up key (e by default) to make it go faster. No, there's no way to make dropping your gun 1 touch, you have to hold the button down for like 2 seconds, so start holding it early before you need to. If your weapon only has 1 shot per reload like the stinger or something, just keep that button held down, then release and repress it after you drop it to pick it back up again and start the process of dropping it as fast as possible; if done right it'll kinda look like a machine gun, but like with rockets or whatever your gun shoots.
When gun dropping, spam your fire button so when you drop one gun, you shoot a shot of two from the next gun in your queue.
Misc gun dropping junk:
-if you dont move with wasd in the elevator on each floor, the timer doesnt move. use this time to look at your guns and drop any you dont need to clear up your 1 through 9 keys and access your good guns faster (it's easier to hit 2 or 3 on the keyboard with your left hand than like 6 or 7). if playing the bullet, use this time to hold tab and click on master rounds, then click drop to gain 1 full heart back; use this game gain full health to use your sword beam.
-do not drop the golden hydra or your extra clip size gained from taking damage will reset to 0. polaris will also reset to level 1. I know gunther does not reset, drop him all you like.
-dropping weapons that switch to a different mode of fire on reload (trick gun, staff of firepower, m16, etc.) will keep the same mode that you were using when you pick it back up. this is useful for weapons where 1 fire mode is better than the other like staff of firepower's laser/magic shots or the triple crossbow's triple shots. note: starting the reload animation then dropping will still keep it on the mode of fire you were previously using, but there will be a sound bug where it plays the sound of the other fire mode (like with the m16, dropping during the reload from bullets to grenades will play grenade sounds for each bullet shot). note: this is entertaining.
