If anyone can answer this question plz email me the answer my email is
hatchetman_juggalo4life@yahoo.com

You cant on episode 1 & 2, but on universe, anything is possible.

All you have to do is, in the Guard Shop, talk to the lady and lure her towards the Weapon
Shop(Arms Shop) by constantly talking and not moving out of range to talk. You will have
both the lady speaking and the shop menu up. Tap right on your control stick 5 times, and
you should have both menus (By the way you need a lot of meseta, and the weapons go back
to 1 equipped when the game is turned off.) now you can Walk with the menu when u press b.
Talk with the bank lady and hit deposit, item, Pick an item, and on the yes, no screen,
hit b 2 times. NOT 3 TIMES,2! Pause the game, hit item pack, and item, make sure you have
the weapon you are multi-equipping, then press a as fast as you can!!!!! When your item
space is full, you should have about 12 items equipped under weapons. HOORAY!!!!!!!! That
is how you multi-equip...

i can't understand @ first but I try and try until i get this glicht but i can't change
the weapon into another weapon how can i do this