Hello there,

As per Wiki:

• Kuva Seer: Projectiles have a small Corrosive burst. Higher rate of fire, magazine capacity, and zoom factor
• These weapons have a max rank of 40. To obtain the maximum rank, the player must polarize the weapon five times, with each Forma increasing the maximum possible rank by 2 (similarly as the Paracesis).
• All Kuva weapons deal innate elemental damage in addition to physical damage. The amount of this damage is random, ranging from 25-60%, while the type of element is determined by the Progenitor Warframe, as per the table below:

According to the above, I added exactly 5 forma to this weapon, so we can obtain Mastery Points from it.

In this case, I recommend picking Toxin as an elemental.

Now, some info about weapon:

• Innate Corrosive damage
• Shots explode in a 2.3-meter radius upon impact with a surface or enemy
• High zoom, excellent for long range
• Very fast projectile speed
• Can benefit from (Primed) Fulmination
• Fairly slow reload speed
• Projectiles have travel time
• Explosion inflicts self-stagger
• Explosion has linear damage falloff from 100% to 70% from central impact
• Extremely low ammo capacity; requires just 3 reloads to fully deplete all ammo reserves
• High zoom capabilities can make zooming in at close range a hindrance
• High zoom amplifies perceived recoil when aiming

Sounds like a good weapon for Profit-Taker.

Enjoy, THeMooN85