Looking for the fastest, most reliable binary triggers for your AR-15? As leading experts in high-performance firearm triggers, we offer premium binary trigger systems from top brands like Franklin Armory and Fostech. Our guides, product comparisons, and exclusive deals help you make the right choice for your needs, ensuring you get lightning-fast follow-up shots and a superior shooting experience. Welcome to your one-stop shop for all things binary triggers.
What is a Binary Trigger? Understanding the Technology
A binary trigger is a specialized fire control group that dramatically increases your rifle’s rate of fire in a safe and controllable manner. Unlike forced reset triggers, which have faced ATF scrutiny, binary triggers are mechanically distinct and federally legal .
The genius of a binary trigger lies in its innovative mechanism:
Standard Semi-Auto Operation: When the trigger is pulled, one round is fired. The hammer is then caught by the disconnector.
The Binary “Echo” Function: As you release the trigger, the second sear lever disengages, firing another round. This means you get one shot when you pull the trigger and a second shot upon release .
This “pull and release” action allows for incredibly fast and accurate double taps, making binary triggers popular for competitive shooting, tactical training, and recreational range use . It’s the closest you can get to simulated automatic fire without entering the heavily regulated NFA territory.
Shop the Best Binary Triggers on the Market
We carry the most trusted and high-performing binary triggers from industry-leading manufacturers. Here’s a breakdown of our top-selling models to help you find the perfect match for your firearm.
1. Franklin Armory BFSIII Binary Trigger Series
Franklin Armory is the pioneer that popularized binary triggers, and their BFSIII series remains the gold standard for reliability and performance .
Franklin Armory BFSIII AR-S1 (Best Overall AR-15 Binary Trigger)
The BFSIII AR-S1 is our top-selling trigger for a reason. It’s a drop-in trigger system that makes installation simple, often without needing a gunsmith .
Platform: AR-15
Modes: Safe, Semi-Auto, Binary
Trigger Profile: Straight, flat-faced trigger blade for improved finger control and to prevent “Glock knuckle” .
Pull Weight: Factory set at a crisp 4.5 pounds .
Compatibility: Works with most AR platforms and calibers, including 5.56 NATO, .308 Win, 9mm, and rimfire. Requires a full-auto bolt carrier group (which most ARs have) .
Key Feature: The “cancel” function allows you to prevent the second shot by moving the selector to safe while holding the trigger rearward .
Franklin Armory BFSIII 22-C1 (Best 10/22 Binary Trigger)
For inexpensive, high-fun plinking, you can’t beat a binary trigger on a Ruger 10/22.
Platform: Ruger 10/22
Modes: Safe, Semi-Auto, Binary
Best For: Ultimate range fun and training with low-cost ammunition.
2. Fostech Echo Triggers (The Premier Competition)
Fostech offers sophisticated alternatives that are renowned for their smooth operation and patented technology.
Bring binary fire to your Kalashnikov. This trigger is engineered specifically for the AK-47 platform.
Platform: AK-47 (compatible with most stamped receivers; may require modification for milled receivers) .
Modes: Safe, Fire, Echo
Profile: Traditional curved trigger.
Best For: AK enthusiasts looking to maximize their fire rate.
Binary Triggers Comparison Table
Feature
Franklin Armory BFSIII AR-S1
Fostech Echo AR-II
Best For
Best Overall, General Use
Tactical/Competition Use
Trigger Shape
Flat Face
Curved
Pull Weight
~4.5 lbs
Not Specified
Installation
Drop-in
Drop-in
Cancel Function
Yes
Yes
Price Point
Mid-Range
Premium
Key Considerations Before You Buy a Binary Trigger
To ensure your binary trigger functions flawlessly, your firearm may need specific components or slight modifications.
AR-15 Requirements: You will typically need a full-auto bolt carrier group (which is standard for most ARs) and potentially an H or H2 buffer to ensure proper cycling. The buffer should not be solid, sand, or a captured spring type .
AK-47 Requirements: For AK platforms, you may need to upgrade your recoil spring for optimal performance .
Compatibility Checks: Some AR-15 lowers with unique features (like a sear block, large trigger pins, or polymer lowers with extra supports) may not be compatible. Always check your specific lower receiver against the manufacturer’s requirements .
Why Choose Us for Your Binary Trigger Purchase?
When you buy from us, you’re not just getting a product; you’re getting a partnership with experts.
Expert Curation: We stock only the best-performing and most reliable models from Franklin Armory and Fostech.
In-Depth Guidance: Our website is a resource center filled with detailed guides, comparison articles, and instructional content.
Customer-Focused Support: Have a question about compatibility? Our team has the technical knowledge to help you get the right trigger for your build.
Fast, Compliant Shipping: We process orders quickly and ship nationwide to all states where binary triggers are legal.
Binary Triggers: FAQ Section
Do binary triggers make my rifle fully automatic?
No. A binary trigger is not a machine gun. It fires one round per function of the trigger (pull and release are two separate functions). The rate of fire is still controlled by the speed of your finger.
Are binary triggers worth the money?
For pure fun and a unique shooting experience, absolutely. While professional shooters like Jerry Miculek can only marginally improve their mag-dump times with a binary trigger, for the average enthusiast, the difference is significant and highly enjoyable. They are best considered advanced range toys rather than practical defensive upgrades .
What’s the difference between a binary trigger and a forced reset trigger (FRT)?
This is a crucial distinction. A binary trigger fires on the pull and the release. A forced reset trigger uses the energy from recoil to force the trigger forward, potentially allowing for a faster rate of fire. The ATF has ruled against FRTs, classifying them as machine guns, while binary triggers remain federally legal .
How fast can you shoot with a binary trigger?
With practice, you can achieve a rate of fire that is nearly twice as fast as with a standard semi-automatic trigger. The actual speed is limited by your skill and the cycle rate of your specific firearm.
Start Shooting Faster Today
Ready to experience the rapid fire and unique control of a binary trigger? Browse our complete collection of Franklin Armory and Fostech binary triggers today. Find the perfect model for your AR-15, AK-47, or Ruger 10/22 and elevate your shooting to the next level.
Skip to content
