CamSet3P-15 Installation Instructions

Professional Installation Recommendation

Professional Installation Recommended: While the CamSet3P-15 is designed for simple installation and can typically be installed in less than two minutes, Camtac recommends that all firearm modifications, installations, inspections, and gunsmithing work be performed by a qualified gunsmith. The user assumes responsibility for proper installation, function testing, and safe operation of the firearm

Always perform a complete function check before live fire.

Installation Video

Watch the complete installation and function check video before installing the CamSet3P-15.

(Embed installation video here.)

Before You Begin

Verify the firearm is unloaded.
Remove all ammunition from the work area.
Wear appropriate eye protection.
Verify that the included three-position selector is available for installation.
Read all instructions completely before beginning installation.
Camtac recommends that all installation, inspection, and gunsmithing work be performed by a qualified gunsmith.

Installation Instructions

Step 1 – Verify the Firearm is Unloaded

Point the firearm in a safe direction and verify that it is completely unloaded. Remove the magazine, lock the bolt to the rear, and visually and physically inspect the chamber to ensure no ammunition is present.

⚠️ Remove all ammunition from the work area before proceeding.

Step 2 – Separate the Upper and Lower Receivers

Push out the rear takedown pin and front pivot pin, then separate the upper receiver from the lower receiver.

Step 3 – Remove the Factory Safety Selector

Ensure the hammer is in the cocked position. Remove the factory or mil-spec safety selector.

In many cases, it is not necessary to completely remove the grip screw. Loosening the grip screw approximately 7–8 turns is often sufficient to remove the selector while retaining the safety detent and spring.

Step 4 – Install the Included Three-Position Selector

Install the supplied three-position selector in either the SAFE or SEMI position.

⚠️ Do not install the selector in the third position during assembly, as interference between the upper and lower receivers may occur when closing the firearm.

Step 5 – Secure the Grip Screw

Retighten the grip screw and verify proper selector movement between positions.

Step 6 – Partially Reassemble the Firearm

Reconnect the upper and lower receivers using the front pivot pin only. Leave the rear takedown pin disengaged to allow access for positioning and alignment of the CamSet3P-15.

Step 7 – Position the CamSet3P-15

Place the CamSet3P-15 onto the rear upper receiver lug (rear receiver post). Center the device by eye and lightly tighten the set screw just enough to prevent the device from falling off the receiver lug.

Do not fully tighten the set screw at this time.

Step 8 – Allow the Device to Self-Align

Slowly close the upper receiver onto the lower receiver. Allow the CamSet3P-15 to self-align as the receivers come together.

Do not force the receivers closed.

Step 9 – Final Tightening

Reopen the upper and lower receivers and tighten the CamSet3P-15 set screw.

⚠️ Tighten only until secure. Do not overtighten, as excessive force may damage the set screw, screw head, or the CamSet3P-15 device.

Step 10 – Complete Reassembly

Close the upper and lower receivers and fully seat the rear takedown pin.

Function Check

Before loading or firing the firearm, perform a complete function check.

Safety Check

Verify the firearm is unloaded.
Charge the firearm by cycling the bolt and allowing it to return fully into battery.
Place the selector in the SAFE position.
Attempt to pull the trigger.
The hammer must not fall.

Semi-Automatic Check

Verify the firearm is unloaded.
Place the selector in the SEMI position.
Charge the firearm by cycling the bolt and allowing it to return fully into battery.
Pull the trigger and hold it to the rear.
Manually cycle the action.
Slowly release the trigger until the reset is felt.
Pull the trigger again.
The hammer should fall normally and the firearm should function as a standard semi-automatic rifle.

Important: In the SEMI position, the CamSet3P-15 does not contact or interfere with any fire control group components. The firearm operates as a standard factory semi-automatic rifle.

Aided Reset Check

Verify the firearm is unloaded.
Place the selector in the third position.
Charge the firearm by cycling the bolt and allowing it to return fully into battery.
Verify proper trigger movement and aided reset function.
Refer to the installation video for the complete aided reset function check and operating instructions.

Product Operation

Position 1 – SAFE

The firearm functions as a standard safety and the trigger should not release the hammer.

Position 2 – SEMI

The CamSet3P-15 remains inactive and does not contact or interfere with any fire control group components. The firearm operates as a standard factory semi-automatic rifle.

Position 3 – AIDED RESET

The CamSet3P-15 engages and provides aided trigger reset operation while maintaining semi-automatic function.

Compatibility

The CamSet3P-15 is designed for use with:

AR-15 pattern rifles
Standard AR-15 upper and lower receiver geometry
Mil-spec fire control components
The included three-position selector

Troubleshooting

Device Will Not Align

Verify the selector is installed in the SAFE or SEMI position.
Ensure the CamSet3P-15 is loosely installed before closing the receivers.
Allow the device to self-align before final tightening.

Inconsistent Operation

Verify proper installation.
Verify correct selector installation and alignment.
Verify compatibility with mil-spec fire control components.
Refer to the installation video for tuning recommendations.

Failure to Reset

Verify proper installation.
Verify selector position.
Verify firearm function without the device installed.

Important Safety Information

The CamSet3P-15 is intended for use in AR-15 pattern rifles configured with the provided three-position selector.

The purchaser and user are responsible for ensuring proper installation, function testing, and safe operation of the firearm. Always follow safe firearm handling practices and comply with all applicable federal, state, and local laws.

While the CamSet3P-15 is designed for straightforward installation and typically requires less than two minutes to install, Camtac recommends that all installation, inspection, adjustment, and gunsmithing work be performed by a qualified gunsmith.