Accurately zeroing your AR-15 is crucial for effective shooting. Before you hit the range and expend valuable ammunition, bore sighting provides a significant head start by roughly aligning your rifle's sights with the barrel's bore. This process drastically reduces the time and ammo needed for precise zeroing. This guide will walk you through how to bore sight an AR-15, ensuring you're ready to hit your target with confidence.
What is Bore Sighting?
Bore sighting is a preliminary step in the firearm zeroing process. It involves aligning your rifle's sights (iron sights, red dot, or scope) with the barrel's bore using a bore sighting tool. This tool allows you to visually verify that your sights are pointing in the same direction as the bullet will travel when fired. It's not a replacement for proper zeroing at the range, but it significantly reduces the adjustments needed during live fire.
Tools You'll Need:
- AR-15 Bore Sighting Tool: This is the most important tool. These tools are available in various forms, including laser bore sighters and optical bore sighters. Choose one that's compatible with your AR-15's caliber.
- Target: A simple paper target will suffice. Place it at a distance of 25 yards or more.
- Stable Rest: A sturdy bench rest or sandbags are highly recommended to ensure the rifle remains stable during the bore sighting process.
- Eye and Ear Protection: Always prioritize safety by wearing appropriate eye and ear protection, even during bore sighting.
Step-by-Step Bore Sighting Instructions:
1. Safety First: Ensure your firearm is unloaded. Visually and physically inspect the chamber to confirm it is empty. Treat the weapon as if it were loaded at all times.
2. Secure Your Rifle: Place your AR-15 securely on a stable rest. This ensures that the rifle remains stationary throughout the bore sighting process.
3. Insert the Bore Sighting Tool: Carefully insert the bore sighting tool into the barrel of your AR-15. Follow the manufacturer's instructions for proper insertion to avoid damaging your firearm.
4. Adjust Your Sights: With the bore sighter in place, look through the scope or at the laser dot. Adjust your sights (iron sights, red dot, or scope) until the sight's aiming point aligns precisely with the bore sighter's reference point (laser dot or crosshairs). This step requires patience and careful adjustments.
5. Test at the Range: Once you've completed the bore sighting process, head to the range for the final zeroing. Fire a few shots at your target and make any necessary adjustments based on the point of impact.
Types of Bore Sighting Tools:
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Laser Bore Sighters: These project a laser beam through the barrel, providing a clear visual reference point. They are generally quick and easy to use.
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Optical Bore Sighters: These use an optical system to align your sights with the bore. They often offer higher precision than laser bore sighters, but may require a bit more practice.
Choosing the Right Bore Sighting Tool:
Selecting the appropriate bore sight depends on your skill level and budget. Laser bore sighters are often easier to use for beginners, while optical bore sighters can offer greater accuracy for experienced shooters.
Beyond Bore Sighting: Achieving Accurate Zero
Bore sighting gets you close, but proper zeroing at the range is essential. Begin at a shorter distance (25 yards), adjust your sights, and progressively move to longer ranges as you refine your zero. Remember that environmental factors like wind and temperature can influence your shots, so account for those during zeroing.
Conclusion:
Bore sighting your AR-15 is a valuable skill that saves time and ammunition during the zeroing process. By following these steps and choosing the right tools, you can ensure your rifle is accurately aligned, leading to improved accuracy and a more enjoyable shooting experience. Always prioritize safety and practice responsible firearm handling.
