Frag Grenades

Frag grenades are the standard ammunition for the Grenade Launcher. They have decent area damage and are fairly good against Big Daddies. Frag grenades are homemade explosives found throughout Rapture and are built into a tin can. The frag grenade can be launched fairly far, and can take out multiple enemies at a time. The frag grenade is a powerful weapon that can hurt you as well as other Splicers if you are not careful where you aim. A Power to the People upgrade can make you immune to the effects of the frag grenade if you happen to be too close to the blast. Power to the People stations are found in various locations throughout the game. The Gernade Launcher is first givin to you in Neptune's Bounty by Peach Wilkins

These are best used against groups of enemies as Jack cannot carry very many. They have a short range. They explode upon impact with an enemy, but if do not hit an enemy they have about a one second fuse.These are also the same grenades used by Nitro Splicers, so any unused grenades found on them are shot from the Grenade Launcher.