Quick Tip - Single Stage vs. Two Stage Trigger

In this Brownells Quick Tip, Caleb dives into a topic many AR-15 owners and shooters often ask about: What’s the difference between a single-stage and a two-stage trigger? He offers a clear, hands-on explanation using two rifles and real-world examples, keeping things approachable while still providing enough technical detail to help you make a confident buying decision.

Understanding the Purpose of the Video

Caleb opens the video by explaining that this isn’t meant to overwhelm viewers with technical jargon. Instead, the goal is to give just enough information to help you decide which trigger style is right for you. His go-to answer when someone asks, “Should I get a single-stage or two-stage trigger?” is simple: It’s personal preference.

What Is a Two-Stage Trigger?

To demonstrate how a two-stage trigger works, Caleb uses one of his BRN-4 rifles equipped with a Geissele SSA-E X Lightning Bow—his favorite AR trigger of all time.

In a two-stage trigger:

• The first stage is the initial amount of pressure you apply before you hit a stopping point.

• The second stage is where the break happens.

For example:

• First stage: 3 pounds

• Second stage: 1.5 pounds

• Total pull weight: 4.5 pounds

Because your finger has already moved through that initial stage, the second stage feels extremely light and crisp, making it easier to control and shoot accurately.

Caleb mentions he also uses two-stage triggers on his bolt-action rifles, so he can maintain a consistent trigger feel across all his firearms. For him, consistency matters—especially when switching between platforms.

Why Choose a Two-Stage Trigger?

Two-stage triggers are ideal for:

• Precision shooting

• Controlled fire under stress

• Shooters who prefer to “prep” the trigger before the break

Caleb emphasizes the safety and reliability of two-stage triggers, especially in AR-style rifles. Since the trigger must pass through a clear two-step process before firing, it helps prevent accidental discharges from drops or impacts.

Even if the first stage is disturbed by an external force (like a fall or bump), it’s unlikely the trigger will continue into the second stage and fire the gun unintentionally.

What Is a Single-Stage Trigger?

Next, Caleb switches to another BRN-4 equipped with a single-stage trigger. Here’s how it works:

• No initial stage—you start applying pressure, and the break happens all at once.

• If there’s movement before the break, it’s usually creep, not an intentional stage.

• Creep is the slight movement you feel as the sear slips off the hammer before the break.

Single-stage triggers are often:

• Simpler in design

• Heavier in pull weight (especially mil-spec triggers)

• Preferred by shooters who want an immediate break with no prep

Caleb notes that while milspec single-stage triggers often feel gritty or inconsistent, high-quality drop-in triggers can be both light and crisp, offering solid performance without the complexity of a two-stage.

Which Trigger Is Safer?

Both trigger styles can be safe when well-made, but Caleb highlights that two-stage triggers in traditional two-piece (non-cassette) designs are generally the safest way to achieve a lighter pull weight without compromising reliability.

For shooters worried about accidental discharge due to bumps or drops, a two-stage design offers added peace of mind.

Cost and Practical Considerations

Two-stage triggers are often more expensive than single-stage models due to their design complexity and performance characteristics. However, Caleb reminds viewers that many people genuinely prefer single-stage triggers, and that's perfectly valid.

The choice between them should ultimately come down to:

• How you shoot

• What feels natural to you

• What you're using the firearm for (defense, competition, hunting, etc.)

Try Before You Buy

Caleb wraps up by encouraging shooters to try both trigger styles if possible. If you have a buddy who runs a different trigger setup, test it out. Some retail stores even have trigger testing displays where you can feel different models before purchasing.

Brownells' own retail location in Grinnell, Iowa, has this kind of setup, which Caleb recommends if you're nearby—or look for something similar at a store near you.

Final Thoughts

At the end of the day, there’s no “best” trigger—only what’s best for you. If you prefer a light, crisp break with a clear prep stage, a two-stage trigger might be ideal. If you want a clean, immediate break every time you press the trigger, a single-stage may be more your style.

Caleb signs off by inviting viewers to drop questions or comments below, and reminds them that they can always call the Brownells tech line for help choosing the right trigger or solving any gunsmithing issues.

Brownells, single stage vs two stage trigger, AR-15 trigger comparison, Geissele SSA-E, best AR trigger, two-stage trigger benefits, AR trigger upgrade, precision rifle trigger, drop-in trigger vs mil-spec, trigger pull weight, AR-15 build tips, trigger safety, AR gunsmithing, AR-15 components