Installing an Aero Precision adjustable gas block can significantly enhance the performance and reliability of your AR-15. This guide provides a step-by-step walkthrough, ensuring a smooth and successful installation. We'll cover everything from the necessary tools to troubleshooting potential issues. Remember, always prioritize safety when working with firearms.
Tools and Materials You'll Need
Before you begin, gather the following:
- Aero Precision Adjustable Gas Block: Ensure you have the correct model for your gas system (carbine-length, mid-length, etc.).
- AR-15 Upper Receiver: Make sure it's properly assembled and free of obstructions.
- Gas Tube: You'll need the gas tube already installed in the upper receiver.
- Barrel Nut Wrench: A quality wrench is crucial for tightening the barrel nut securely.
- Castle Nut Wrench: This is for securing the receiver extension (buffer tube).
- Punch (small): Helpful for aligning parts and removing pins.
- Hammer: Use a soft-faced hammer to avoid damaging parts.
- Torque Wrench: Essential for achieving the proper torque on the barrel nut.
- Safety Glasses: Always wear safety glasses when working with firearms.
- Cleaning Supplies: Clean your barrel and upper receiver before installation.
Step-by-Step Installation Instructions
1. Preparation:
- Clean Your Parts: Thoroughly clean your upper receiver, barrel, and gas tube to remove any debris. This will prevent interference during installation and ensure smooth operation.
- Inspect Components: Examine the adjustable gas block and ensure all parts are present and undamaged.
2. Aligning the Gas Block:
- Insert the Gas Tube: Make sure your gas tube is properly seated in the upper receiver and the barrel.
- Position the Gas Block: Carefully slide the Aero Precision adjustable gas block onto the gas tube, aligning it with the gas port in your barrel. Ensure it sits flush against the barrel.
3. Securing the Gas Block:
- Tighten the Set Screws: Using a small Allen wrench (usually included with the gas block), carefully tighten the set screws. Avoid over-tightening, which could damage the gas block or barrel. Apply even pressure to all screws.
4. Verification and Function Check:
- Inspect for proper seating: Check that the gas block is securely attached to the gas tube and barrel. There should be no movement or play.
- Test Fire (Safety First!): Once the gas block is secured, carefully reassemble your AR-15. At a safe shooting range, perform a function check to ensure proper operation. Start with a few rounds to ensure reliable cycling. Adjust the gas block accordingly using its adjustment screw for optimal performance with your specific ammunition.
Troubleshooting Common Issues
- Gas Block Won't Align: Ensure the gas tube is correctly seated in both the upper receiver and the barrel. If necessary, use a small punch to help align everything.
- Set Screws Won't Tighten: Ensure the set screws are the correct size and that you're using the correct Allen wrench. If they're still not tightening, it might be a defect in the gas block.
- Malfunction after Installation: Start by verifying the proper gas block position and tightness. Inaccurate gas block installation will lead to malfunctions. Check that the gas tube is securely seated. Incorrect gas setting on the block might also require further adjustment.
Conclusion
Installing an Aero Precision adjustable gas block is a straightforward process, but precision and care are essential. Following these steps and paying attention to detail will ensure successful installation and improved performance from your AR-15. Remember to always practice safe gun handling and seek professional assistance if you encounter problems. This guide provides general information, and consulting the manufacturer’s instructions included with your specific model is always recommended.
