Fast Firing

"Shoots faster than normal."

- In-game description

 is the first upgrade of Path 3 for the Sniper Monkey in Bloons TD 6. Similar to the Faster Firing upgrade in BTD5, it increases attack speed of the Sniper Monkey. To be specific, it increases attack speed of the Sniper Monkey by ~42%.

It costs $340 on Easy, $400 on Medium, $430 on Hard, and $480 on Impoppable.

Summary
Fast Firing is a simple upgrade that increases attack speed for the Sniper by a fair +42%, thereby increasing attack speed of most Snipers from every 1.59s to every 1.113s. Although the further Even Faster Firing upgrade is almost always bought when wanting faster Sniper attack speed, the Fast Firing upgrade on its own can serve a few life-saving benefits that might not be possible if there isn't enough money to purchase the Even Faster Firing upgrade. It is best paired with crosspaths to benefit its more powerful attacks, specifically Full Metal Jacket or Shrapnel Shot and above.

Tips

 * Sometimes all that is needed for the Sniper to become a bit more reliable against stronger early-game bloons is to give it the Fast Firing upgrade. This is especially evident on CHIMPS Mode on maps where long-ranged towers are highly advantaged, such as on Geared or Infernal.
 * When the Fast Firing upgrade is given to a Maim MOAB, BFBs become stunned fast enough that the stun uptime is well over 100%. This is because a Sniper with Fast Firing attacks every 1.113s instead of 1.59s, and therefore it can perform a faster stun refresh.
 * The pure 0-0-1 Sniper is not very useful compared to adding multiple 0-0-0 Snipers. Instead, this upgrade should only be purchased with at least one other upgrade from Path 1 or 2. For example, a 1-0-1 Sniper is pretty handy against chipping down Pinks and Yellows between Rounds 11 to 19, as well as Blacks and Whites between Rounds 20 to 23, though again 1-0-2 Sniper is more desirable once enough cash can be afforded for Even Faster Firing.

Trivia

 * In BTD6, the blue hat that Faster Firing wore in BTD5 is now used for the Night Vision Goggles upgrade without additional crosspaths.
 * Prior to Version 20.0, when the Fast Firing upgrade is given to a Maim MOAB, BFBs become stunned fast enough that the stun uptime is just over 100%. This is because a Sniper with Fast Firing before Version 20.0 attacked every 1.3s instead of 2.0s.
 * Now Fast Firing makes the Sniper even faster than before, giving better uptime.
 * This upgrade and it's subsequent upgrade names share a similar theme to the Dart Monkey's Tier 1 and 2 Middle path upgrades in that they both increase attack speed and that their Tier 2 upgrades both start with Very followed by the previous upgrade name.