Shooting without reloading?

[CarribeanThunder]

First, you need a Bayonet.

What you do is, you walk up to any enemy, and stab him. Then press the 1 key, then stab, then 1 key - that's the best explanation I can give of this part.
If done right, you can do the next step - shoot, then press the 1 key, then shoot, then 1 key.

If done right again, you have done the glitch. This can be passed over to any other gun.