Ray gun or good gun glitch

If you have the starter pistol use the mystery box
and when the lid opens shoot it four times crouch or prone
the shoot four times again and you should have ray gun or a good gun every time
I always use it and 9 out of 10 times it works
Or the other way I have heard is shoot your whole
mag into the back and then knife

Monkey bomb glitch

When you get monkey bombs throw a frag grenade at the floor
then instead of pressing RB to throw it back press LB
And it will explode but no harm done and then you pull out a random monkey grenade
for free and it docent use any of your others
WARNING it only works if you have monkey bombs

Plz thank the topic and plus my rep

Thanks