Unlocking the Binary Advantage: A Closer Look
The AR-15 platform, a symbol of American firearm ingenuity, has long been a favorite among enthusiasts and competitive shooters. Its modularity, reliability, and adaptability make it a cornerstone of modern sporting rifles. One upgrade that’s steadily gaining popularity is the Franklin Armory Binary Trigger. This innovative system offers a unique firing experience, significantly enhancing the speed at which rounds can be sent downrange. If you’re looking to amplify your AR-15’s performance, this comprehensive guide will walk you through the installation process of a Franklin Armory Binary Trigger, ensuring a safe and successful upgrade.
The Franklin Armory Binary Trigger distinguishes itself from standard AR-15 triggers by offering three firing modes: Safe, Semi, and Binary. In Safe mode, the weapon will not fire. In Semi mode, each pull of the trigger fires a single round. The Binary mode is where the magic happens. In Binary mode, one round is fired when the trigger is pulled and another when the trigger is released. This “pull and release” functionality effectively doubles the rate of fire compared to a standard semi-automatic trigger, making it a highly desirable upgrade for range use and competition shooting.
It’s essential to understand that the legality of binary triggers can vary greatly depending on your location. State and local laws should always be researched before purchase and installation. It’s your responsibility to ensure compliance with all relevant regulations. This article provides installation instructions, but it does not offer legal advice.
Safety First: Your Primary Responsibility
Before even considering touching your AR-15, safety must be your absolute top priority. Firearm safety is paramount, and neglecting these crucial steps could result in serious injury or even death.
Unload and Verify
The most important step is to ensure your AR-15 is completely unloaded. Remove the magazine. Open the bolt and visually inspect the chamber to confirm it is empty. Physically run your finger along the chamber (be careful and ensure no ammunition is present). Close the bolt and pull the charging handle again, checking the chamber again. Repeat this multiple times, just to be absolutely sure. Only then should you consider proceeding.
Eye and Ear Protection
Always wear appropriate eye and ear protection throughout the installation process. Tiny metal fragments or springs can be ejected during disassembly and assembly, posing a significant risk to your eyes. Loud noises can damage your hearing, so protect your ears.
Work Environment
Choose a well-lit and organized workspace. This will help you stay focused and keep track of small parts. Avoid distractions and take your time.
Know Your Local Laws
As mentioned previously, familiarizing yourself with the legalities surrounding binary triggers in your area is a must.
Take Your Time
Rushing the installation process can lead to mistakes. Patience is a virtue when it comes to gunsmithing. Work deliberately and carefully, double-checking each step.
Gathering the Right Tools: The Armorer’s Toolkit
Having the correct tools is essential for a smooth and successful installation. The right tools will make the process easier, and more importantly, they will reduce the risk of damaging your AR-15 or the trigger.
Punches
A punch set is absolutely necessary. Specifically, you’ll need a roll pin punch set. These punches are designed to properly remove and install the trigger and hammer pins without damaging your receiver. The specific sizes of punches may be required, so have a range to ensure you have the right one for each pin.
Hammer
A small to medium-sized hammer is needed for tapping the punches.
AR-15 Armorer’s Wrench
This tool is extremely helpful for removing and installing the castle nut on the buffer tube if you need to detach the lower receiver. While not strictly required for the trigger install itself, it makes the overall process more efficient.
Small Pliers
Needle-nose pliers or similar small pliers are invaluable for manipulating small springs and detents.
Torque Wrench
If you decide to remove your upper receiver or are working on other parts, a torque wrench may be needed.
Bench Vise
A bench vise with padded jaws can be extremely helpful for holding the lower receiver steady while working.
Cleaning Supplies
Clean your AR-15 before and after installation.
Lubrication
You’ll need gun grease and oil for smooth operation. Apply to the friction points of the trigger mechanism after installation.
Assembling the Upgrade: A Step-by-Step Journey
Now that you are prepared, let’s go through the installation. Follow these steps carefully.
Removing the Existing Trigger
1. Separate the Upper and Lower Receivers: First, separate the upper and lower receivers of your AR-15. This is usually accomplished by pushing out the two takedown pins located on the lower receiver.
2. Remove the Pistol Grip: Unscrew the pistol grip from the lower receiver. This allows for easier access to the trigger components.
3. Remove the Trigger and Hammer Pins: Carefully remove the trigger and hammer pins. Use your punch set and hammer to gently tap the pins out. Be mindful of the springs and detents.
4. Remove the Trigger Components: Once the pins are removed, the trigger, hammer, disconnector, and associated springs will be free from the lower receiver. Note their positions and orientations during removal for future reference (in case you decide to revert back to the original trigger).
Installing the Franklin Armory Binary Trigger Components
1. Assemble the Trigger Group: Assemble the components of the binary trigger according to the manufacturer’s instructions included in your kit. Pay close attention to the diagrams and the order of the components.
2. Install the Trigger: Carefully slide the trigger assembly into the lower receiver. Ensure the trigger is seated correctly and that all components align properly.
3. Install the Hammer: Insert the hammer into the lower receiver. Ensure the hammer spring is correctly positioned.
4. Insert the Pins: Carefully re-insert the trigger and hammer pins. Use your punch set and hammer to gently tap the pins into place. Be sure the pins go in straight and are fully seated.
5. Reattach the Pistol Grip: Once the trigger components are installed, reattach the pistol grip.
6. Reassemble the Upper and Lower Receivers: Reconnect the upper and lower receivers by re-inserting the takedown pins.
Functional Checks and Adjustments: Ensuring Reliability
Once the trigger is installed and the receivers are reunited, conduct thorough function tests to confirm everything is operating correctly.
Safety Check
Test the safety selector. Ensure it moves smoothly and positively engages the safe position, preventing the hammer from falling.
Mode Selection
Switch to the Semi mode and pull the trigger. The hammer should fall, firing a single shot. If using dummy rounds, the primer should be struck.
Binary Mode Activation
Switch to the Binary mode and pull the trigger. The hammer should fall. Release the trigger; the hammer should fall again.
Dry-Fire Testing
Dry-fire the AR-15 in all three modes to check the function. Cycle the charging handle after each shot and listen for the distinct sound of the hammer resetting.
Bolt Catch
Ensure the bolt catch functions correctly.
Safety Check
Always repeat the safety checks before handling your firearm again.
Troubleshooting
If any issue occurs, do not continue use until the issue is identified and resolved. Always consult a professional gunsmith or Franklin Armory directly if you have questions or concerns.
Common Challenges: Troubleshooting the Installation
Even with careful installation, you may encounter some issues. Knowing how to troubleshoot these problems can save you time and frustration.
Trigger Will Not Reset
If the trigger does not reset after pulling it, there might be an issue with spring tension, the sear engagement, or debris interfering with the movement. Recheck the installation. Verify the trigger components are installed correctly and that the springs are in the proper positions.
Failure to Fire in Binary Mode
The Binary mode relies on the trigger being released. If the hammer does not fall upon releasing the trigger, check for binding. This might be a disconnector issue. Again, verify the trigger’s components are installed correctly and that there is no grit or debris.
Hammer Follow
This occurs when the hammer follows the bolt forward instead of staying cocked. It can be a sign of a weak hammer spring, or an issue with the hammer itself.
Double-Feeding
Double feeding can be caused by multiple problems, including the action of the binary trigger, and also the magazine and the ammunition. Inspect the magazine. Also, ensure the ammunition is suitable for the AR-15.
Long-Term Care: Maintenance for Peak Performance
Maintaining your Franklin Armory Binary Trigger is vital to ensure its reliability and longevity. Regular cleaning and lubrication will help keep it functioning flawlessly.
Cleaning
After each range session or when you notice a buildup of carbon or debris, clean the trigger mechanism. Use a solvent designed for firearms and a brush to remove any build-up.
Lubrication
After cleaning, lightly lubricate the moving parts of the trigger with a high-quality gun oil or grease. Avoid using excessive lubricant, as this can attract dirt and debris.
Periodic Inspection
Regularly inspect the trigger group for any signs of wear and tear. Check the pins to make sure they’re secure. If you notice any damage or unusual wear, replace the affected components.
Storage
Store your AR-15 and its binary trigger in a dry, climate-controlled environment.
Final Thoughts and Responsibility
Installing a Franklin Armory Binary Trigger can significantly enhance the firing experience of your AR-15. With careful preparation, attention to detail, and adherence to safety guidelines, this upgrade is within reach for many AR-15 owners. The goal of this guide is to empower you with the knowledge and the information to install your trigger safely and properly.
Remember that firearm modifications come with responsibilities. Familiarize yourself with all applicable laws, prioritize safety at all times, and always follow the manufacturer’s instructions. If you’re not comfortable with any step of the installation process, consult with a qualified gunsmith.
Disclaimer: This article is for informational purposes only and does not constitute professional advice. Always prioritize safety and verify compliance with all applicable laws. The author and the publisher are not responsible for any damage, injury, or legal issues resulting from the use or misuse of this information. Always follow all manufacturer’s instructions and consult with a qualified gunsmith if needed. This guide is not a substitute for professional instruction.
