SF300/SF250 Operating Manual
SF300 / SF250 · INSTRUCTOR SERIES

Operating Manual

Making shooters better. A high-tech training gun for instructors that gives immediate feedback on use of force, trigger manipulation and targeting. It is built to help stop accidental and negligent discharges and to serve reality-based training, defensive tactics and firearm instruction.

Smart Firearms Training Devices Voice-driven menu CR123 / USB-C
SF300 training gun with orange slide and black frame
01 · What it does

Features

The Instructor Series is designed to teach proper handling. Many of its features can be customised to help shooters improve their skills and safety.

Accidental Discharge Sensor

If a finger enters the Accidental Discharge Zone (inside the trigger guard) and no shot is fired, an alarm sounds and an orange LED flashes for 9 seconds. This alerts the instructor and reminds students to index their finger when not firing.

Round Counter

Counts rounds and stops firing (and emitting the laser pulse) when all rounds are fired. Eject and replace the magazine to resume. The instructor sets the number of rounds.

Random Round Count

The gun can pick a random number of rounds per magazine, so students can't predict when they will run dry.

Visual Shot / Incursion Indicator

Flashing lights show what happened, even from across the room when several training guns are in use.

Green, 9 s: shot fired
Orange / amber, 9 s: unintentional finger incursion
02 · Know the device

Parts

Next Gen Series layout. The numbers match the callouts on the diagram.

Line drawing of the training gun with numbered callouts 1 to 9
  1. 1Trigger / trigger guard
  2. 2Speaker
  3. 3Magazine release
  4. 4Magazine
  5. 5Allen key storage
  6. 6Rear sight
  7. 7Battery cover
  8. 8Front sight
  9. 9LED indicator light
03 · Voice menu

Programming the device

Everything is set up through a voice-activated menu, using only the trigger.

  1. Enter the menuPull and hold the trigger for about 10 seconds. The gun says “program”.
  2. Scroll to a settingPull the trigger to step through the setting numbers listed below.
  3. Choose an optionThe gun prompts you for a selection. Select and release the trigger.
  4. Back to trainingThe gun says “ready”. It has left programming mode and is ready to use.
Out of the box: shot-only modeThe gun ships in shot-only mode. Pulling the trigger makes a shot sound and the green LED lights for 9 seconds. Use the menu to turn on the other functions.
04 · Reference

Settings

All menu settings, with their defaults where the manual states one.

#OptionWhat it doesDefault
1Accidental Discharge Sensor
Sound & light
When a finger is in the trigger guard but the trigger is not pulled, an alarm sounds and the orange LED on each side flashes for 9 seconds.Off
2Accidental Discharge Sensor
Sound only
Turns off the alarm sound only. The light still works, so trainers can see when an incursion happened.—
3Shot SoundToggles the shot sound on/off.On
4Laser PulseConfigures the laser pulse / lane. Four pulse modes are available.—
5Round CounterToggles the round counter on/off.Off
unlimited ammo
6Magazine CapacitySets the number of rounds in the magazine.Unlimited
7BluetoothToggles Bluetooth on/off. Optional feature, only if equipped.—
8Random Magazine Capacity / Random Jam ModeToggles random magazine capacity / random malfunction on/off.
The source manual names this setting two ways: “Random Magazine Capacity Mode” in the text and “Random Jam Mode” in the table.
Off
9Reserved for future expansion
10Intrusion Alert DelayHow long a finger must be in the trigger guard before the pre-shot alert triggers.
0.5 s1 s1.5 s2 s
1 s
11Post-Shot Alert DelayDelay before the finger sensor alerts after a shot is fired.
1 s2 s3 s4 s
2 s
12ShotboxIf installed: changes Shotbox channels and handles pairing.—
13Reserved for future expansion
14Reserved for future expansion
15Factory ResetReturns all settings to factory defaults.—
05 · Daily use

Start up & shut down

Start up

Insert the magazine. This turns the gun on, and it uses the last settings you chose.

Auto shut-down

If you don't do the shut-down procedure with the magazine out, the gun shuts itself down after 10 minutes.

Shut-down procedure

  1. Remove the magazine
  2. Clear the chamberPull and release the trigger to fire the remaining round in the chamber.
  3. Hold the triggerPull and hold the trigger for about 10 seconds.
  4. ReleaseThe gun says “shut down”. Release the trigger.
Save the batteryStore the training gun with the magazine out after shut-down.
06 · Care

Battery, Allen key & sights

Battery & USB-C

Unscrew the top screw and remove the top cover (part 7). Swap in a new CR123 battery, refit the cover and tighten the screw. Your settings are kept. With a rechargeable CR123, charge through the USB-C port just forward of the battery.

Allen key

Stored inside the magazine well (part 5). Push it out with a pen or similar through the small hole on the outside of the gun.

Sight adjustment

Pro and Basic models: loosen the front or rear sight with the Allen key, slide the rear sight where you want it, then tighten.

Remove the Allen key before aggressive trainingIt is both a choking hazard and a sharp-object risk.
07 · Fixes

Troubleshooting

Most problems come from a weak battery, so try a fresh CR123 first.

The device is making weird noisesBattery
Replace the battery.
The side orange LEDs are glowingBattery
Replace the battery.
It isn't showing all the shotsBattery
Replace the battery.
It isn't shooting
  1. Check that a magazine is inserted. The device won't fire without one.
  2. If the magazine is in and it still won't shoot, replace the battery.
  3. Still not shooting? See “seems electronically dead” below, then contact support.
It's acting strange
Cold storage or use can cause odd behaviour. Bring the device somewhere warm. If it still acts strange once warmed up, contact support.
It seems electronically dead, even with a new battery
  1. Remove the magazine.
  2. Find the tab inside the magazine well and carefully pull it out slightly.
  3. Reinsert the magazine and test. The device should start up normally.
Need help?Email support@smartfirearms.us.
08 · Read before use

Important notes & warnings

Weighted gun and magazineDropping the gun on a person or animal can cause injury or death. The weighted magazine can easily be ejected during training, so keep the area below the gun clear.
Never carry or display it in publicIt is designed to look and feel like a real firearm and may be mistaken for one. Use it only in controlled training events.
Choking hazardIncludes small parts that may be a choking hazard for children. Keep them away from children. Remove the Allen key before any aggressive training.
Not a substitute for instructionThe device does not replace actual firearms instruction.

Warranty

All Smart Firearms Training Devices come with a 90-day standard warranty, which can be extended up to two years from purchase. For warranty questions, email support@smartfirearms.us.