Long Range Tacks is an upgrade for the Tack Shooter and has been in every Bloons TD game to date, with varying names. It gives the Tack Shooter a range boost. Extra Range Tacks usually does not help much, but it may help when you're going for a blade shooter.
In Bloons TD 3 the name was changed to Longer Range and it became the 1st upgrade of path 2 for the Tack Shooter as each tower was given a total of 4 upgrades in BTD3, 2 upgrades in each of the 2 paths. Also, another range-type upgrade was added for the tower, called Even Longer Range that give it another boost of range.
In Bloons TD 5 the name was changed back to its original name, Extra Range Tacks, and it became the 1st upgrade of path 2 for the Tack Shooter. And, like in BTD3, the tower was given a 2nd range-type upgrade, called Super Range Tacks. It is the 1st upgrade on the 2nd path and costs $85 on Easy, $100 on Medium, $110 on Hard and $120 on Impoppable. It increases range from 144 px to 165 px.