double weapons glitch??

So lately in sniper gallery I have the double weapons glitch really much than I have mostly like a dsr1 and a m24 or dsr1 and a fr f2 does somebody know how to do this I can give someone a clue everytime when I have the glitch I picked a weapon thats not mine so I think while I die pressing G than I pick the previously weapon up but I respawn with my own weapon so I have double weapons bit I don't know how to it exactly only have some clues if someone wants to test I play in eu server under the nickname SenZz

yOu make it when you respawn on a Weapon. For example a friend was killed in your base, then you take his weapon and put it exact on a spawn point. Then you die, with luck you have now 2 Main Weapons