Hi, I haven't asked a question in a LONG time. I have a **** blademaster account, and since I couldnt kill the rathian (I have no clue why) I made a new account thats a bowgunner. Two days later, I'm almost *** on him (just need to do land shark) and I'm confuesed on upgrading your Bowgun to Mod Level 2/3. I 100% do not understand what they do. I thought they would let you use ammo's that are lv2 but Mod Level 1 already lets me (haven't tried lv3) but still, I need to know exactly what it does.