The Geissele Super Semi-Automatic (G2S) trigger is renowned among AR-15 enthusiasts for its crisp break and clean reset. Installing it, however, requires precision and care. This guide will walk you through the process step-by-step, ensuring a smooth and successful installation. Always prioritize safety and handle firearms responsibly. This guide assumes basic familiarity with AR-15 disassembly and reassembly. If you are uncomfortable with any part of this process, seek assistance from a qualified gunsmith.
Tools You'll Need:
- AR-15 Lower Receiver: This is where the trigger group resides.
- Geissele G2S Trigger: Ensure you have the correct model for your AR-15.
- Roll Pin Punch Set: A high-quality set is crucial for safe and accurate pin removal and installation.
- Hammer: A small, lightweight hammer is best for gently tapping pins.
- Punching Block: This protects the receiver from damage during pin removal and installation.
- Safety Glasses: Protect your eyes from flying debris.
- Small Flathead Screwdriver: For removing the trigger pin retaining screw (if applicable).
- AR-15 Lower Parts Kit (Optional): Having spare parts on hand can be helpful if something unexpected occurs.
Step-by-Step Installation:
1. Safety First! Always ensure your firearm is unloaded and the chamber is clear. Visually inspect the firearm and double-check. This cannot be stressed enough.
2. Disassemble the Lower Receiver: Remove the magazine, if present. Using your roll pin punch set, carefully remove the takedown pins from the lower receiver. Separate the upper and lower receivers.
3. Remove the Existing Trigger Group: Locate the trigger pin and hammer pin. Using the appropriate sized punches, carefully drive out both pins from the lower receiver. Once the pins are removed, the trigger group should come out easily. Set it aside.
4. Installing the G2S Trigger: Carefully examine the Geissele G2S trigger group components. Familiarize yourself with the placement of each part.
5. Install the Hammer: Begin by installing the hammer onto the lower receiver. Ensure it sits correctly.
6. Install the Trigger: Insert the trigger into its designated position on the lower receiver. Pay close attention to orientation.
7. Install the Disconnector: The disconnector is a crucial component. Ensure it's seated properly and engages correctly with the trigger and hammer.
8. Install the Trigger Pin: Carefully align the trigger pin and gently tap it into place using the punch and hammer. Avoid using excessive force.
9. Install the Hammer Pin: Repeat the process for the hammer pin. Ensure both pins are fully seated.
10. Reassemble the Lower Receiver: Replace the takedown pins. Ensure they are securely in place.
11. Function Check: Before reinstalling the upper receiver, perform a dry fire test (with no ammunition). Ensure the trigger functions smoothly, there are no binding issues, and the hammer falls reliably when the trigger is pulled and released.
12. Reassemble the Firearm: Once the dry fire test is successful, reassemble the entire firearm by inserting the upper receiver back onto the lower receiver and securing the takedown pins. Remember to re-check that the weapon is clear and unloaded before doing this.
Troubleshooting:
- Trigger Doesn't Move Smoothly: Check for binding or interference from other components. Inspect for any misplaced or improperly seated parts.
- Hammer Doesn't Drop: This could indicate issues with the disconnector or sear engagement. Carefully re-examine the installation of these components.
This guide provides detailed instructions for installing a Geissele G2S trigger. Remember, safety is paramount. If you're unsure about any step, seek the assistance of a qualified gunsmith. Improper installation can result in malfunctions and potential safety hazards. Always refer to Geissele's official instructions if available for the most accurate and up-to-date guidance.
