Penta

"The Penta Launcher fires up to five grenades that can be remotely triggered at just the right moment."

- In-Game Description

 is a Corpus Grenade launcher. It launches ballistic grenades with primary fire, and detonates all active grenades with the Zoom feature.

Damage listed in game is damage from physical grenade impact with a target. The explosion is significantly more powerful.

Characteristics
Advantages:
 * High AoE Damage.
 * 350 Blast damage that can be increased by mods.
 * A maxed Firestorm increases the blast radius up to 6.2 meters.
 * Capable of firing more than one grenade before detonating.
 * Grenades deal Impact damage when hitting an enemy.
 * High ammo efficiency.
 * Explosion can also cause procs.
 * Explosion damage dealt to self is far less in comparison to the Ogris.
 * Speculation: Is this due to lower base damage or lower suicidal damage?
 * Relatively inexpensive acquisition costs.

Disadvantages:
 * Can only have five grenades out at once.
 * When using the Split Chamber mod, the extra projectiles count toward the limit of five live grenades.
 * Grenades that have stopped moving have no obvious visual or audio cue.
 * Grenades have slow projectile speed travel time and heavy arcing.
 * Grenades has high bouncing capability which makes it hard to stack on desired spot.
 * Requires Mastery Level of 6.
 * Increasing Ammo Capacity does not allow you to fire more then the 5 shots from the clip.
 * Cannot deal crits.

Acquisition
The can be purchased for  and the blueprints for.

Weapon Loadouts
See the user build section for builds using this weapon.

Tips

 * Grenades fired from the Penta are lobbed in a heavy arc, allowing the player to kill enemies hiding behind cover much more easily, as the detonation happens upon external trigger.
 * Multiple impacts done by the same grenade is possible.
 * Standing at a greater height allows for the grenades to be lobbed and bounce further, allows the user to see the grenade better, as well as eliminating the worry of self-damage.
 * Split Chamber, under random circumstances, can fire a total of six grenades. Provided multishot works on every shot, 2 shots puts out 4 grenades, allowing you to fire a third for the 5 total limit, but with 1 extra from the multishot.
 * Modding with Speed Trigger is an efficient alternative to quickly launch up to the grenade limit.
 * Combining Cryo Rounds and Hellfire will create extra Blast damage which scales from the original. More damage can be achieved by adding another element such as Toxin or Electric damage.
 * Consider combining Stormbringer and Cryo Rounds to add Magnetic damage, neatly sidestepping Blast's limited effectiveness against shielded enemies.
 * When using the Penta as a Waframe other then Trinity, Rhino or Frost, be extra cautious and do not attempt to use in small areas. Fully modded one grenade can usually kill any warframe regardless of stats unless protected in some way.
 * Players can prematurely detonate grenades in mid-air, which deals headshot damage to targets below.
 * The Penta is a very effective weapon when firing from a safe location on an Infested mission.

Trivia

 * This is the first weapon to ever had the Zoom capability replaced with a different function.
 * Penta derives from the Greek prefix of "five", which makes sense as the grenade launcher composes a clip of 5 grenades.
 * Penta is the third weapon model that has a clip that responds after firing. First being the Twin Gremlins, and the second is the Soma.
 * Its model is known to be a non-static model, as the upper barrel shaft shifts when reloading.
 * It seems the entire gun represents a mere skeletal structure, unlike most Corpus weaponry.

Bugs

 * Rarely a detonation will cause damage to you even if the grenade is well beyond the explosion radius. (Online issue.)
 * In its Arsenal UI, it does not display its trigger function, though it functions as Semi-Auto.