Timney Triggers, one our preferred trigger providers here at Scorpion Rifle works, answers this question quite perfectly...if you have any comments or want a little more information to share or add, let us know. 

What are Single-Stage Triggers?

Single-stage triggers are the traditional product for the avid user. They’re designed to operate in one smooth range of motion allowing you to pull the trigger through to release the pin. It’s simple and there are no gimmicks involved in the use of single-stage triggers. Many find single-stage triggers easier to adjust and with a clean break in the trigger action.

What are Two-Stage Triggers?

Two-stage triggers have an operating process that involves two distinct phases of firing. The advantage of this style of design is that it allows the user to know exactly when the firing will take place. They know that once they set the trigger after the first phase, the gun will fire. Instead of breaking and firing as part of one process, you hit a break wall within the firing of the weapon. Immediately following this break wall, the weapon discharges. Knowing when the trigger is going to break gives you the advantage in terms of accuracy over your target. You’ll be able to time your shots more effectively, and mitigate issues with balance and unsteady grips that can limit some weapons.

How to Choose Between the Two

In choosing between single-stage replacement triggers and two-stage triggers, it’s important to determine what you want from the weapon. The single-stage triggers work well for those who require a fast action pull with reliable performance, while the two-stage triggers are effective for target practice in high stress scenarios. It’s important to work with an expert to discuss which option suits your application best.