Installing an Aero Precision adjustable gas block can significantly enhance the performance and reliability of your AR-15. This guide provides a comprehensive, step-by-step walkthrough for a smooth and successful installation. We'll cover everything from the necessary tools to troubleshooting potential issues. Whether you're a seasoned AR-15 builder or a first-timer, this guide will equip you with the knowledge to confidently install your Aero Precision adjustable gas block.
Tools and Materials You'll Need:
Before you begin, gather the following tools and materials:
- Aero Precision Adjustable Gas Block: Make sure you have the correct model for your specific AR-15 platform.
- AR-15 Upper Receiver: Clean and free of any obstructions.
- Gas Tube: Ensure it's compatible with your gas block.
- Barrel Nut Wrench: A properly fitting wrench is crucial for preventing damage.
- Front Sight Block (if applicable): If your upper receiver has a front sight base, it will need to be removed.
- Punch: A brass punch is recommended to avoid marring your parts.
- Hammer: Use a hammer with a comfortable grip.
- Torque Wrench: Essential for proper tightening and preventing damage.
- Allen Wrenches: The size will depend on your specific gas block model. Check the Aero Precision instructions for specifics.
- Cleaning Solvent and Patches: For cleaning the barrel and gas tube.
- Protective Gear: Safety glasses and gloves are highly recommended.
Step-by-Step Installation Instructions:
1. Preparation:
- Clean your barrel and gas tube: Thoroughly clean any debris or carbon buildup from both components. This ensures a smooth installation and prevents malfunctions.
- Remove the existing gas block (if applicable): If you're replacing an existing gas block, carefully remove it using the appropriate tools. Take note of the orientation and any specific procedures for your current gas block.
2. Installing the Aero Precision Adjustable Gas Block:
- Insert the gas tube: Carefully slide the gas tube into the upper receiver. Ensure it's properly seated and aligned.
- Position the gas block: Align the gas block over the gas tube, ensuring proper alignment with the barrel.
- Secure the gas block: Depending on the specific Aero Precision model, you'll typically use set screws to secure the gas block onto the barrel. Tighten these screws evenly and gradually using the appropriate Allen wrench to avoid stripping the screws. Consult your specific Aero Precision instructions for precise torque specifications.
- Check for proper alignment: After securing the screws, ensure the gas block is firmly seated and aligned with both the gas tube and the barrel.
3. Final Steps and Adjustments:
- Reassemble your upper receiver: Once the gas block is securely installed, reassemble your upper receiver, making sure all parts are properly aligned.
- Test fire: Always test fire your weapon at a safe shooting range, following all safety precautions. Begin by adjusting the gas block to its lowest setting. This will allow you to assess the cycling of the weapon and adjust the gas setting accordingly for optimal performance and reliability.
- Adjust gas settings as needed: If you encounter malfunctions (failure to feed, failure to extract, etc.), adjust the gas block settings. Aero Precision adjustable gas blocks generally have a numbered dial to accurately regulate gas flow. Start with minor adjustments and always test after making changes.
Troubleshooting Common Issues:
- Gas block not aligning properly: Double-check the gas tube alignment and ensure the gas block is properly positioned before tightening screws.
- Set screws stripping: Avoid over-tightening the set screws. Use a torque wrench and follow the manufacturer's specifications.
- Malfunctions after installation: Start with the lowest gas setting and gradually increase until you find the optimal setting for reliable cycling.
Conclusion:
Successfully installing an Aero Precision adjustable gas block enhances your AR-15's performance. By following these step-by-step instructions and taking necessary precautions, you can confidently complete this upgrade. Remember to always prioritize safety and consult your firearm's manual for additional guidance. If you're unsure about any step, seek assistance from a qualified gunsmith.
