It's like max of 7 rockets regardless of the perks, not a huge game breaker there. Special ammo is easy to get in PVP and PVE, nothing there worth noting. (If you have IB Sniper it does nothing to it) The only good thing about it is the high disc to lower the grenade CD and the extra grenade. Grenades also take longer to throw and prepare for than a few shots with a hand canon. It's all situational there. It's basically excellent for knocking bosses off ledges, but that wont be there for much longer!