is very simple...just do the 2 frags 1smoke(take any weapon out NOT YOUR SMOKE and push up on the d-pad and X at the same time) then throw them out somewhere... and take out any weapon that you have lancer, shotty not your pistol. so you have your lancer out and walk up to any other weapon that u have never picked up and just pick it up and u will have 3 weapons and nothing in your hands

ps. when you pick up your other weapon look where it sais SNIPER Taken bottom left corner and u will see.... (blank) Taken.... and if you want to see it again take our your second weapon and pick up another weapon you have never picked up.... and ther you go!!

found by-thegomez33