"A futuristic weapon that fires deadly lasers, but can only be used for a limited time."
— Inventory description
The Red Blaster's effects are very obvious from the moment the player picks it up, as it gives the player a substantial increase in mobility, unlimited ammunition, as well as the ability to take out enemies with little effort due to the rapid-fire capability. Since this is a semi-automatic, though, the rapid-fire capability is only limited to how fast the player can input the firing button.
However, to counteract these buffs, there is only a limited amount of time this can be used.