i just found a cool glitch! if you have your weapon out and press N it doubles the amount of grenades you throw by one extra grenade each time, to reset the grenade amount: enter build mode by pressing B and then press N.
i personally think of this glitch as a feature, so do not patch this glitch. (P.s/F.Y.I: do not have too many grenades at once, it will lag the game and make it run slow)
a cool side effect of this glitch is if your holding either weapon 2 or 3 just by pressing N, not only does it double your grenades by one extra grenade at a time, it also lets you dual wield. an example is Weapon 3 and 1 being used at the same time!
(equip weapon 2 and then press "N" to equip the first weapon while it glitches to also keep the 2nd weapon equipped, the result: a powerful boring drill)