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b.o.s. lock REFERENCE guide

Always ensure that the firearm is cleared and rendered safe.

Our reference guide provides step-by-step instructions for programming and clearing fingerprints, installing your device, understanding battery indicators, and following best practices. Please read all instructions carefully to ensure proper B.O.S. Lock programming and installation.

included tools
B.O.S. Lock Proprietary Secure Bolt
secure bolt
B.O.S. Lock Proprietary Installation Tool
installation tool
B.O.S. Lock Programming Pin
programming PIN
B.O.S. Lock Charging Cable
CHARGING CABLE
Break-in Recommendation for New Firearms

Always follow the manufacturer's guidelines for breaking in the firearm. We recommend firing between 200 – 400 rounds before installing the B.O.S. Lock. This break-in period will help the firearm's spring to settle, ensuring the B.O.S. Lock functions effectively and efficiently.

PROGRAMMING PROCEDURE:

eNTERING pROGRAM mODE

  • To initiate programming, insert the programming pin into the ‘P’ port and press the program button.

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  • The blue LED light will illuminate immediately, flash 3 times, pause, flash 3 times, pause, and continue in this pattern.​

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*B.O.S. Lock Best Practice Tip: Before you begin programming, ensure the device is fully charged.

B.O.S. Lock 3D Rendering with Entering Programming Mode
B.O.S. Lock 3D Rendering with Registering Fingerprints Instructions
REGISTERING FINGERPRINTS

  • Press your right index finger pad on the biometric sensor, lift it off, and then press it back on the biometric sensor in the same position.

    • This process will continue until the LED light flashes green, confirming successful fingerprint registration.

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  • Finger orientation should be similar to extending your trigger finger for trigger discipline.

 

​​*B.O.S. Lock Best Practice Tip: After registering fingerprints for all authorized users, test the recognition before installing the device on your firearm.

REGISTERING multiple FINGERPRINTS

  • To register another fingerprint, re-enter programming mode and follow the same steps.

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  • Ensure you always use your right index finger for all fingerprint registrations.

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  • Keep your finger in the same orientation, similar to extending your trigger finger for trigger discipline, and use the same linear motions.

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​*B.O.S. Lock Best Practice Tip: We recommend registering 10 or more fingerprints per authorized firearm user to ensure seamless and reliable access.

B.O.S. Lock 3D Rendering with Clearing Fingerprint Instructions
CLEARING FINGERPRINTS

  • To initiate clearing fingerprints, insert the programming pin into the ‘C’ port while pressing and holding the clear button for 3 seconds.​

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  • The LED light will flash white multiple times, indicating success.​​

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*B.O.S. Lock Best Practice Tip: B.O.S. Lock Tip: Entering clearing mode will clear all prints, requiring new registration for all authorized users.

INSTALLATION PROCEDURE:

PREPARING FOR INSTALLATION

  • To open the retention arm, activate the B.O.S. Lock with a programmed fingerprint.

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  • With the arm open, slide the device fully onto the rail with the programming ports facing the trigger guard.​

    • The ports will be inaccessible once the device is installed.

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*B.O.S. Lock Best Practice Tip: Always ensure the firearm is cleared and rendered safe before installation.

B.O.S. Lock 3D Rendering with Preparing for Installation Instructions
B.O.S. Lock 3D Rendering with Securing Device Instructions
SECURING B.O.S. Lock

  • Insert the secure bolt from the sensor side and hand-tighten it with the installation tool until it is secure.

    • Take care not to over-tighten the secure bolt.

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*B.O.S. Lock Best Practice Tip: After use, ensure you place the installation tool back in the case for safekeeping.

FINALIZING INSTALLATION

  • Hold the grip of the firearm firmly with your dominant hand, ensuring your fingers are off the trigger.

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  • Using your non-dominant hand, grasp the slide firmly from the rear. ​

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  • Push the retention arm in front of the slide, then release your hand from the slide.

    • If installed properly, the B.O.S. Lock arm will securely lock the firearm slide to the rear position, preventing cycling.​​

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​*B.O.S. Lock Best Practice Tip: After successful installation of B.O.S. Lock, while your firearm is still cleared and rendered safe, practice unlocking the device and enjoy peace of mind.

B.O.S. Lock 3D Rendering with Finalizing Installation Instructions
TROUBLESHOOTING

If the slide does not drop when activated, consider these possibilities:​

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  • Slide Lock Engaged: The slide lock might be engaged, preventing the slide from moving forward. To resolve this, do not engage the slide lock while installing the device.

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  • Empty Magazine: An empty magazine may be seated in the firearm, which prevents the slide from moving forward. To properly cycle test the B.O.S. Lock, either remove the empty magazine completely or replace it with a loaded magazine.

BATTERY:

Battery Status and Charging Information
Graphic of the Biometric Optimized Safety Device Secured on a Firearm

  • Before you begin programming, ensure the device is fully charged using the provided USB-C charging cable.

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  • To check the battery level of the B.O.S. Lock, simply perform a fingerprint read. After a successful read and the device unlocks, the LED light will indicate the current battery status.

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Battery Status Alerts:

  • Dual Green Flash = full battery

  • Dual Yellow Flash = low battery, charge device

  • Dual Red Flash = critically low battery,

  • Repetitive Red Flash = charge device immediately, device will not lock

 

*B.O.S. Lock Best Practice Tip: Conduct monthly firearm safety inspections to confirm both the firearm and B.O.S. Lock are in working order, including battery status.

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